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PLANT AND ANIMAL TISSUES

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tissues are group of cells which perform a particular function

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tissues are group of cells which perform a particular function

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A tissue is a group of similar cells that performs a specific function. Tissues are made up of cells & organs are made up of tissues. The word tissue comes from a form of an old French verb meaning “to weave”. There are 4 types of tissues: muscle tissue, epithelial tissue, nervous tissue and connective tissue.

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Tissue

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A group of cells performing specialized function is known as tissue.

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Tissues is a group os cells that are similar in structure and perform specific tasks.

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1) A group of cells.
2) Cells of similar functions form  a tissue with the same function.
3) Tissues then form to make organs.

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Tissues are group of cell. Tissue forms organs in plants and animals body.

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Tissues are group of cell. Tissue forms organs in plants and animals body.

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Tissues are made of cells and organs are made of tissues

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Tissues are made of cells and organs are made of tissues

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1) they are a group of cell
2) they have similar structure and function

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Tissues are a group of cells of the same kind.

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There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue.

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When cells of similar functions and structures come together and form a single unit, it is called a tissue.

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Tissues are group of Cells having the similar functions. Group of tissues forms organs which carry out different functions in multicellular organisms. Plants have Xylem [ Water ] and Phloem [ food ] tissues. Humans have biceps and triceps which are made of muscular tissues.

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Tissues are group of Cells having the similar functions. Group of tissues forms organs which carry out different functions in multicellular organisms. Plants have Xylem [ Water ] and Phloem [ food ] tissues. Humans have biceps and triceps which are made of muscular tissues.

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A group of cells having a common origin , similar in structure and work together to achieve a particular function is known as tissue .

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Cells perform many activities.When all these cells combine to form a single function it is called a tissue. Plants are fully made up of tissues. In humans some tissues are muscles.

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Tissues are group of cells that make an organ
there are many types of tissues

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Cells of similar functions and similar sturctures form a tissue.eg. muscular tissue.
group of tissues form an organ.

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tissues are made up of cells
tissues make up an organ

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The term tissue is used to describe a group of cells that are similar in structure and perform a specific function.

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The term tissue is used to describe a group of cells that are similar in structure and perform a specific function.

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provides support, provides shape to the body ,conserves body heat

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1. ever growing tissues
2. permanent tissues

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Tissues are a combination of cells doing different types of functions. Tissues further form to be organs

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Tissues are a combination of cells doing different types of functions. Tissues further form to be organs

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Tissue is a group of cells of similar structures
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

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Tissues, are the most important and crucial part in our body, hierarchy of tissues is organs, and organ make up whole body,

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Tissue is a group of cells that have a similar structure and that function together as a unit.

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Cell group together  to form tissues tissues form organs, specific tissues fulfil specific needs.

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tissues are a group of  cells and they perform specific functions

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A group of cells are called tissues

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A group of cells performing similar functions are called tissues

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Animsl and plant tissue

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Tissues are cells of the same type having similar structures and functions

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The use of tissues in multicellular organisms is to provide structural and mechanical strength as well as to allow division of labour.

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The use of tissues in multicellular organisms is to provide structural and mechanical strength as well as to allow division of labour.

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Cells are the basic, fundamental unit of life. So, if we were to break apart an organism to the cellular level, the smallest independent component that we would find would be the cell.

Explore the cell notes to know what is a cell, cell definition, cell structure, types and functions of cells. These notes have an in-depth description of all the concepts related to cells.
Table of Contents
Cell Definition

"A cell is defined as the smallest, basic unit of life that is responsible for all of life's processes."

Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.

Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.

What is a Cell?

A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.

All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the food into energy.

Cells are complex and their components perform various functions in an organism. They are of different shapes and sizes, pretty much like bricks of the buildings. Our body is made up of cells of different shapes and sizes.

Cells are the lowest level of organisation in every life form. From organism to organism, the count of cells may vary. Humans have more number of cells compared to that of bacteria.

Cells comprise several cell organelles that perform specialised functions to carry out life processes. Every organelle has a specific structure. The hereditary material of the organisms is also present in the cells.

Discovery of Cells

Discovery of cells is one of the remarkable advancements in the field of science. It helps us know that all the organisms are made up of cells, and these cells help in carrying out various life processes. The structure and functions of cells helped us to understand life in a better way.

Who discovered cells?

Robert Hooke discovered the cell in 1665. Robert Hooke observed a piece of bottle cork under a compound microscope and noticed minuscule structures that reminded him of small rooms. Consequently, he named these "rooms" as cells. However, his compound microscope had limited magnification, and hence, he could not see any details in the structure. Owing to this limitation, Hooke concluded that these were non-living entities.

Later Anton Van Leeuwenhoek observed cells under another compound microscope with higher magnification. This time, he had noted that the cells exhibited some form of movement (motility). As a result, Leeuwenhoek concluded that these microscopic entities were "alive." Eventually, after a host of other observations, these entities were named as animalcules.

In 1883, Robert Brown, a Scottish botanist, provided the very first insights into the cell structure. He was able to describe the nucleus present in the cells of orchids.

Characteristics of Cells

Following are the various essential characteristics of cells:

Cells provide structure and support to the body of an organism.

The cell interior is organised into different individual organelles surrounded by a separate membrane.

The nucleus (major organelle) holds genetic information necessary for reproduction and cell growth.

Every cell has one nucleus and membrane-bound organelles in the cytoplasm.

Mitochondria, a double membrane-bound organelle is mainly responsible for the energy transactions vital for the survival of the cell.

Lysosomes digest unwanted materials in the cell.

Endoplasmic reticulum plays a significant role in the internal organisation of the cell by synthesising selective molecules and processing, directing and sorting them to their appropriate locations.

Types of Cells

Cells are similar to factories with different labourers and departments that work towards a common objective. Various types of cells perform different functions. Based on cellular structure, there are two types of cells:

Explore: Difference Between Prokaryotic and Eukaryotic Cells

Prokaryotic Cells

Main article: Prokaryotic Cells

1. Prokaryotic cells have no nucleus. Instead, some prokaryotes such as bacteria have a region within the cell where the genetic material is freely suspended. This region is called the nucleoid.

2. They all are single-celled microorganisms. Examples include archaea, bacteria, and cyanobacteria.

3. The cell size ranges from 0.1 to 0.5 µm in diameter.

4. The hereditary material can either be DNA or RNA.

5. Prokaryotes generally reproduce by binary fission, a form of asexual reproduction. They are also known to use conjugation - which is often seen as the prokaryotic equivalent to sexual reproduction (however, it is NOT sexual reproduction).

Eukaryotic Cells

Main article: Eukaryotic Cells

1. Eukaryotic cells are characterised by a true nucleus.

2. The size of the cells ranges between 10-100 µm in diameter.

3. This broad category involves plants, fungi, protozoans, and animals.

4. The plasma membrane is responsible for monitoring the transport of nutrients and electrolytes in and out of the cells. It is also responsible for cell to cell communication.

5. They reproduce sexually as well as asexually.

6. There are some contrasting features between plant and animal cells. For eg., the plant cell contains chloroplast, central vacuoles, and other plastids, whereas the animal cells do not.

Cell Structure

The cell structure comprises individual components with specific functions essential to carry out life's processes. These components include- cell wall, cell membrane, cytoplasm, nucleus, and cell organelles. Read on to explore more insights on cell structure and function.

Cell Membrane

The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells.

The cell membrane is the outer covering of a cell within which all other organelles, such as the cytoplasm and nucleus, are enclosed. It is also referred to as the plasma membrane.

By structure, it is a porous membrane (with pores) which permits the movement of selective substances in and out of the cell. Besides this, the cell membrane also protects the cellular component from damage and leakage.

It forms the wall-like structure between two cells as well as between the cell and its surroundings.

Plants are immobile, so their cell structures are well-adapted to protect them from external factors. The cell wall helps to reinforce this function.

Cell Wall

The cell wall is the most prominent part of the plant's cell structure. It is made up of cellulose, hemicellulose and pectin.

The cell wall is present exclusively in plant cells. It protects the plasma membrane and other cellular components. The cell wall is also the outermost layer of plant cells.

It is a rigid and stiff structure surrounding the cell membrane.

It provides shape and support to the cells and protects them from mechanical shocks and injuries.

Cytoplasm

The cytoplasm is a thick, clear, jelly-like substance present inside the cell membrane.

Most of the chemical reactions within a cell take place in this cytoplasm.

The cell organelles such as endoplasmic reticulum, vacuoles, mitochondria, ribosomes, are suspended in this cytoplasm.

Nucleus

The nucleus contains the hereditary material of the cell, the DNA.

It sends signals to the cells to grow, mature, divide and die.

The nucleus is surrounded by the nuclear envelope that separates the DNA from the rest of the cell.

The nucleus protects the DNA and is an integral component of a plant's cell structure.

Cell Organelles

Cells are composed of various cell organelles that perform certain specific functions to carry out life's processes. The different cell organelles, along with its principal functions, are as follows:

Cell Organelles and their Functions

The nucleolus is the site of ribosome synthesis. Also, it is involved in controlling cellular activities and cellular reproduction.

The nuclear membrane protects the nucleus by forming a boundary between the nucleus and other cell organelles.

Chromosomes play a crucial role in determining the sex of an individual. Each human cells contain 23 pairs of chromosomes.

The endoplasmic reticulum is involved in the transportation of substances throughout the cell. It plays a primary role in the metabolism of carbohydrates, synthesis of lipids, steroids and proteins.

Golgi bodies are called the cell's post office as it is involved in the transportation of materials within the cell.

Ribosomes are the protein synthesisers of the cell.

The mitochondrion is called "the powerhouse of the cell." It is called so because it produces ATP - the cell's energy currency.

Lysosomes protect the cell by engulfing the foreign bodies entering the cell and help in cell renewal. Therefore, they are known as the cell's suicide bags.

Chloroplasts are the primary organelles for photosynthesis. It contains the pigment called chlorophyll.

Vacuoles store food, water, and other waste materials in the cell.

Cell Theory

Cell Theory was proposed by the German scientists, Theodor Schwann, Matthias Schleiden, and Rudolf Virchow. The cell theory states that:

All living species on Earth are composed of cells.

A cell is the basic unit of life.

All cells arise from pre-existing cells.

A modern version of the cell theory was eventually formulated, and it contains the following postulates:

Energy flows within the cells.

Genetic information is passed on from one cell to the other.

The chemical composition of all the cells is the same.

Functions of Cell

A cell performs major functions essential for the growth and development of an organism. Important functions of cell are as follows:

Provides Support and Structure

All the organisms are made up of cells. They form the structural basis of all the organisms. The cell wall and the cell membrane are the main components that function to provide support and structure to the organism. For eg., the skin is made up of a large number of cells. Xylem present in the vascular plants is made of cells that provide structural support to the plants.

Facilitate Growth Mitosis

In the process of mitosis, the parent cell divides into the daughter cells. Thus, the cells multiply and facilitate the growth in an organism.

Allows Transport of Substances

Various nutrients are imported by the cells to carry out various chemical processes going on inside the cells. The waste produced by the chemical processes is eliminated from the cells by active and passive transport. Small molecules such as oxygen, carbon dioxide, and ethanol diffuse across the cell membrane along the concentration gradient. This is known as passive transport. The larger molecules diffuse across the cell membrane through active transport where the cells require a lot of energy to transport the substances.

Energy Production

Cells require energy to carry out various chemical processes. This energy is produced by the cells through a process called photosynthesis in plants and respiration in animals.

Aids in Reproduction

A cell aids in reproduction through the processes called mitosis and meiosis. Mitosis is termed as the asexual reproduction where the parent cell divides to form daughter cells. Meiosis causes the daughter cells to be genetically different from the parent cells.

Thus, we can understand why cells are known as the structural and functional unit of life. This is because they are responsible for providing structure to the organisms and perform several functions necessary for carrying out life's processes.

Also Read: Difference Between Plant Cell and Animal Cell

To know more about what is a cell, its definition, cell structure, types of cells, the discovery of cells, functions of cells or any other related topics, explore BYJU'S Biology. Alternatively, download BYJU'S app for a personalised learning experience.

Frequently Asked Questions

2. State the characteristics of cells.

Cells provide the necessary structural support to an organism.

The genetic information necessary for reproduction is present within the nucleus.

Structurally, the cell has cell organelles which are suspended in the cytoplasm.

Mitochondria is the organelle responsible for fulfilling the cell's energy requirements.

Lysosomes digest metabolic wastes and foreign particles in the cell.

Endoplasmic reticulum synthesises selective molecules and processes them, eventually directing them to their appropriate locations.

3. Highlight the cell structure and its components.

The cell structure comprises several individual components which perform specific functions essential to carry out life processes.
The components of the cell are as follows:

Further Reading: Cell Biology MCQs

4. State the types of cells.

Cells are primarily classified into two types, namely

Prokaryotic cells

Eukaryotic cells

5. Elaborate Cell Theory.

Cell Theory was proposed by Matthias Schleiden, Theodor Schwann, and Rudolf Virchow, who were German scientists. The cell theory states that:

All living species on Earth are composed of cells.

A cell is the basic unit of life.

All cells arise from pre-existing cells.

7. What are the functions of the cell?

The essential functions of the cell include:

The cell provides support and structure to the body.

It facilitates growth by mitosis.

It helps in reproduction.

Provides energy and allows the transport of substances.

Register at BYJU'S for cell related Biology notes. Refer to these notes for reference.

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What Is A Cell? - Definition, Structure, Types, Functions

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Cells are the basic building block of all living things. Explore cell definition, cell structure, types of cells, cell theory, cell discovery and cell functions @ BYJU'S.

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In biology, tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

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In biology, tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

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Tissues are group of cells

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A group of cells performing similar functions is called a tissue. For example, a heoi of brain cells is a tissue.

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Tissues are groups of cells which have similar functions. Multiple cells form tissues and multiple tissues form organs

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Tissues are group of cells

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Bone tissue: structure, histology and anatomy (preview) | Kenhub

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There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. 

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There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. 

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Tissues helps us to move, walk, jump and to play. In tissues every cell dies within six months

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tissues fall under four major categories.

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tissues fall under four major categories.

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connective tissue
epithelial tissue
muscle tissue
nervous tissue

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Tissue

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Their are 4 types of tissues : Connective tissues, Epithelial tissues, Muscle tissues and nervous tissues.

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Cells are basic building blocks of living organisms

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Epithelial tissues have cilia on them.

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A group of cells performing similar functions is called a tissue. For example, a heoi of brain cells is a tissue.

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Tissues are of 4 types These categories are epithelial, connective, muscle, and nervous. The primary tissue types work together to contribute to the overall health and maintenance of the human body.

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Bone tissue formation: ossification and cells (preview) - Human Histology | Kenhub

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Tissue Definition

Tissues are groups of cells that have a similar structure and act together to perform a specific function. The word tissue comes from a form of an old French verb meaning "to weave". There are four different types of tissues in animals: connective, muscle, nervous, and epithelial. In plants, tissues are divided into three types: vascular, ground, and epidermal. Groups of tissues make up organs in the body such as the brain and heart.

Types of Animal Tissues

Connective

Connective tissue connects or separates groups of other tissues. It is found in between all the other tissues and organs in the body. Connective tissue is made up of cells and ground substance, which is a gel that surrounds cells. Most connective tissue, except for lymph and blood, also contains fibers, which are long, narrow proteins. Fibers can be collagenous, which bind bones to tissues; elastic, which allow organs like the lungs to move; or reticular, which provide physical support to cells. Connective tissue also allows oxygen to diffuse from blood vessels into cells.

About 1 in 10 people are have a disorder involving connective tissue. Some connective tissue disorders include sarcomas, Marfan syndrome, lupus, and scurvy, which is a Vitamin C deficiency that leads to fragile connective tissue.

Muscle

Muscle tissue comprises all the muscles in the body, and the specialized nature of the tissue is what allows muscles to contract. There are three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle. Skeletal muscle anchors tendons to bones and allows the body to move. Cardiac muscle is found in the heart and contracts to pump blood. Smooth muscle is found in the intestines, where it helps move food through the digestive tract, and it is also found in other organs like blood vessels, the uterus, and the bladder. Skeletal and cardiac muscles are striated; this means that they contain sarcomeres (a unit of muscle tissue) that are arranged in a uniform pattern. Smooth muscle does not have sarcomeres.

Duchenne muscular dystrophy is an example of a muscle tissue disorder. It is an inherited disorder that causes muscles to atrophy over time. The muscles shorten as they atrophy, which can cause scoliosis and immobile joints. Individuals with the disorder are usually male because the gene responsible for it is found on the X chromosome (of which males have only one).

Nervous

Nervous tissue is found in the brain, spinal cord, and peripheral nerves, which are all parts of the nervous system. It is made up of neurons, which are nerve cells, and neuroglia, which are cells that help nerve impulses travel. Nervous tissue is grouped into four types: gray matter and white matter in the brain, and nerves and ganglia in the peripheral nervous system. The main difference between gray and white matter is that axons of the neurons in gray matter are unmyelinated, while white matter is myelinated. Myelin is a white, fatty substance that insulates neurons and is crucial for nervous system functioning.

The symptoms of Alzheimer's disease, such as memory loss, mood swings, and confusion, are caused by the breakdown of nervous tissue. Amyotrophic Lateral Sclerosis (ALS) is another disease that causes nervous tissue to degenerate, which leads to the loss of higher brain functions over time. Other nervous tissue disorders include multiple sclerosis, where the immune system attacks and destroys nervous tissue, Huntington's disease, where an abnormal protein causes neuron death, and Parkinson's disease, where the part of the brain that controls movement is impaired because not enough dopamine is produced.

This image is a microscopic view of nervous tissue. It is a cross-section of a peripheral nerve.

Epithelial

Epithelial tissue, or epithelium, covers the surfaces of organs including the skin, the trachea, the reproductive tract, and the digestive tract's inner lining. It creates a barrier that helps protect organs, and it also has roles in absorbing water and nutrients, getting rid of waste, and secreting enzymes or hormones. All of the body's glands are formed from ingrowths of epithelium. Some common epithelial tissue diseases are skin diseases like eczema and psoriasis, which both cause rashes. When cancer develops from epithelial tissue, it is called a carcinoma. Epithelial cells in the airways are also responsible for asthma, which is characterized by inflammation of the airways that leads to shortness of breath.

Types of Plant Tissues

Vascular

Vascular tissues in plants transport substances throughout the different parts of the plant. The two types of vascular tissue are xylem and phloem. Xylem transports water and some soluble nutrients, while phloem transports organic compounds the plant uses as food, particularly sucrose. Vascular tissues are long and thin, and form cylinders that nutrients are transported through like pipes. Vascular tissue is also involved with two types of meristems, which are tissues that contain undifferentiated cells that are used during a plant's growth. The meristems accompanying vascular tissue are the cork cambium and the vascular cambium. These meristems are associated with the growth of the plant's vascular tissues.

Ground

Ground tissue is made up of all cells that are not vascular or dermal (having to do with the epidermis; see below). There are three types of ground tissue: parenchyma, collenchyma, and sclerenchyma. Parenchyma cells form the "filler" tissue in plants, and perform many functions like photosynthesis, storage of starch, fats, oils, proteins, and water, and repairing damaged tissue. Collenchyma tissue is made up of long cells with irregularly thick walls that provide structural support to the plant. Plants that grow in windy areas have thicker walls of collenchyma tissue. Sclerenchyma is also supporting tissue, but it is made of dead cells. There are two types of sclerenchyma: fibers and sclereids. Fibers are long, slender cells, while sclereids are star-shaped with thick cell walls. Sclerenchyma fibers make up fabrics such as hemp and flax.

Epidermal

The epidermis is made up of a single layer of cells that covers a plant's roots, stems, leaves, and flowers. (Epidermis is also the word for skin in human anatomy.) It guards the plant against water loss, regulates the exchange of carbon dioxide and oxygen, and in roots, it absorbs water and nutrients from the soil. The epidermis on a plant's stems and leaves have pores called stomata, which carbon dioxide, water vapor, and oxygen diffuse through. Epidermal cells are themselves covered by the plant cuticle, which contains mainly cutin, a waxy substance that protects against water loss. Plants in deserts and other arid regions often have thick cuticles to help conserve water.

Cell - the basic biological unit of living things; groups of them form tissues.

Organ - a self-contained group of tissues that performs a specific function in the body.

Sarcomere - a unit of striated muscle tissue that contains the filaments actin and myosin.

Meristem - a region of undifferentiated plant tissue found at the site of new plant growth at the tips of roots and offshoots of stems.

Quiz

2. Alzheimer's disease is associated with the breakdown of what type of tissue?
A. Connective
B. Muscle
C. Nervous
D. Epithelial

3. What is a function of epithelial tissue?
A. To cover the surface of organs and protect them
B. To cover the parts of a plant and guard it against water loss
C. To transport nutrients throughout a plant
D. To allow the body to move

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Tissue - Definition and Types of Tissues | Biology Dictionary

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Tissues are groups of cells that have a similar structure and act together to perform a specific function. The word tissue comes from a form of an old French verb meaning "to weave". There are four different types of tissues in animals: connective, muscle, nervous, and epithelial.

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The term was introduced in anatomy by Xavier Bichat in 1801

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The term was introduced in anatomy by Xavier Bichat in 1801

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Epithelial | Types of Animal Tissues | Don't Memorise

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What is a tissue, animation..

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Stomach: cells and tissues (preview) - Human Histology | Kenhub

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There are 4 basic types of tissue: connective tissue
epithelial tissue
muscle tissue
nervous tissue.

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Mindmap doodle

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There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

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There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

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Tissues introduction

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Dear Doctor: I was 37 years old when I was diagnosed with endometriosis. Now my 22-year-old daughter is having a lot of the same problems that I did when she gets her period. What is actually happening when you have endometriosis?

Dear Reader: To understand endometriosis, we first need to talk about the endometrial lining. Also known as the endometrium, it's a dual layer of specialized tissue found in people with uteruses. It lines the interior of the uterus and plays a role in both menstruation and pregnancy.

The inner layer of endometrial cells attaches to the smooth, muscular walls of the uterus and serves as something like an anchor. The top layer responds to the monthly hormonal shifts that take place in people of child-bearing age. At the time of ovulation, the endometrium thickens and prepares to nourish a fertilized egg. If conception doesn't take place, the endometrial lining is shed. That's what we commonly refer to as a period.

When someone has endometriosis, it means that a tissue that is similar to the endometrial lining is growing outside of the uterus. These areas of abnormal tissue, known as implants, can be found throughout the pelvic cavity. Most often, they are seen on or beneath the ovaries, behind the uterus or growing on the tissues that anchor the uterus to the pelvis. Less often, this tissue may grow on the bladder or the bowel. It's estimated that up to 10% of people with uteruses in the U.S. between the ages of 25 and 40 are affected by endometriosis.

Just like the endometrial lining within the uterus, this extrauterine tissue responds to the monthly progression of hormones. However, since it's growing outside of the uterus, when the tissue breaks down, there's nowhere for it to go. Over time, it becomes trapped. This can result in inflammation and irritation, severe menstrual pain, cysts on the ovaries, and the formation of scar tissue. In some people, scar tissue can develop into adhesions. These are bands of fibrous tissue that can cause the organs and structures within the pelvic cavity to stick together. In addition to causing pain and discomfort, adhesions can affect a person's fertility.

Symptoms of endometriosis range from mild to severe. They include unusually heavy or painful periods, pain during or after sex, painful urination or bowel movements during one's period, spotting between periods and difficulty becoming pregnant. Diagnosis can include a pelvic exam, ultrasound, MRI or laparoscopy, each of which offers a different way to visualize the pelvic cavity. Treatment, which depends on the specifics of each person's case, can include pain medications; hormone therapy to manage pain and tissue growth; surgery to remove extrauterine tissue; and, if needed, fertility treatments. Hysterectomy, which at one time was the go-to procedure in severe cases, is no longer automatically recommended.

The cause of endometriosis is not yet known, but a family history is a risk factor for developing the condition. That makes it important for your daughter to let her gynecologist know about the symptoms she is experiencing.

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Ask the Doctors: Endometriosis causes extra layer of tissue to grow

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Dear Doctor: I was 37 years old when I was diagnosed with endometriosis. Now my 22-year-old daughter is having a lot of the same problems that I did when she gets her period. What is actually happening when you have endometriosis? Dear Reader: To understand endometriosis, we first need to talk about the endometrial lining.

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Class 9 Science Tissues Part 1 - Plant Tissue Chapter 6 part 1 Explanation, Question Answers

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Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous.

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helpful for understanding animal tissues

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helpful for understanding animal tissues

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Hope u like it

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Get the Class 9 Science Chapter 6 - Tissues from here in PDF format. This chapter is from the latest edition of NCERT Book which is best for the current academic session.

NCERT Class 9 Science Chapter 6 Tissues is important from the exam point of view. Students must study the whole chapter thoroughly and try to grasp the concepts in a clear manner so that they are able to score good marks in exams. We have provided here the latest edition of the Chapter Tissues of Class 9 Science NCERT Book. Students may download the chapter in PDF and read it at any time as per their convenience. NCERT Solutions for all the questions given in this chapter can also be accessed from the link provided at the end of this article. All the solutions are prepared by the subject experts and are best for the exam preparations.
About Class 9 Science Chapter 6 Tissues
Chapter 6 - Tissues comes under Unit II: Organization in the Living World. This chapter explains the types, structures and functions of the plant and animal tissues.
Major topics discussed in the chapter are:
→ Introduction to Tissues

→ Plant Tissues

→ Meristematic Tissue

→ Permanent Tissue

→ Animal Tissues

→ Epithelial Tissue

→ Connective Tissue

→ Muscular Tissue

→ Nervous Tissue
The NCERT Class 9 Science Chapter 6 can be accessed from the following link: Read below some important points from the summary of the chapter:
* Tissue is a group of cells similar in structure and function.

* Plant tissues are of two main types - meristematic and permanent.

* Meristematic tissue is the dividing tissue present in the growing regions of the plant.

* Permanent tissues are derived from meristematic tissue once they lose the ability to divide. They are classified as simple and complex tissues.

* Animal tissues can be epithelial, connective, muscular and nervous tissue.

* Nervous tissue is made of neurons that receive and conduct impulses.
Download the NCERT Solutions for Class 9 Science Chapter 6 from the following link: Also Check: NCERT Books for Class 9 (Latest Editions for 2021-22) NCERT Solutions for Class 9 (Updated for 2021-22) CBSE Class 9 Science Best & Complete Study Material for Class 9 Science for 2021-2022

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NCERT Class 9 Science Chapter 6 Tissues PDF (Latest Edition)

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Get the Class 9 Science Chapter 6 - Tissues from here in PDF format. This chapter is from the latest edition of NCERT Book which is best for the current academic session. NCERT Class 9 Science Chapter 6 Tissues is important from the exam point of view.

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Epithelial tissues act as coverings, controlling the movement of materials across their surface. Connective tissue binds the various parts of the body together, providing support and protection. Muscle tissue allows the body to move and nervous tissues functions in communication.

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Epithelial tissues act as coverings, controlling the movement of materials across their surface. Connective tissue binds the various parts of the body together, providing support and protection. Muscle tissue allows the body to move and nervous tissues functions in communication.

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Tissue meme

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Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.

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Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.

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muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts. The tissue is highly cellular and is well supplied with blood vessels. The cells are long and slender so they are sometimes called muscle fibers,

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muscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts. The tissue is highly cellular and is well supplied with blood vessels. The cells are long and slender so they are sometimes called muscle fibers,

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Second video

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Animal Tissues Class 9 - Part 2 of Tissues, NCERT CBSE Science Chapter 6 Explanation Question, Ans

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Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material.