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The lymphatic system is a network of vessels, nodes, and ducts that pass through almost all bodily tissues. It allows the circulation of a fluid called lymph through the body in a similar way to blood. It plays a key role in fighting disease.

Functions:

The lymph system has three main functions:

Fluid balance: The lymphatic system returns excess fluid and proteins from the tissues that cannot return through the blood vessels. The fluid often collects in the tiny spaces surrounding cells, known as the interstitial spaces. Small lymph capillaries connect these spaces to the lymphatic system.
Around 90%Trusted Source of the plasma that reaches tissues from the arterial blood capillaries returns through the venous capillaries and veins. The remaining 10% travels through the lymphatic system.
A disruption of fluid processing can resultTrusted Source in localized swelling, known as lymphedema.

Absorption: The lymphatic system plays a key roleTrusted Source in intestinal function. It assists in transporting fat, fighting infections, and removing excess fluid.
Part of the gut membrane in the small intestine contains tiny finger-like protrusions called villi. Each villus contains tiny lymph capillaries, known as lacteals. These absorb fats and fat-soluble vitamins to form a milky white fluid called chyle.
This fluid contains lymph and emulsified fats, or free fatty acids. It delivers nutrients indirectly when it reaches the venous blood circulation. Blood capillaries take up other nutrientsTrusted Source directly.

The immune system: The third function of lymph nodes is to defend the bodyTrusted Source from exposure to potentially hazardous microorganisms, such as infections. The body’s first line of defense involves:
physical barriers, such as the skin
toxic barriers, such as the acidic contents of the stomach “friendly” bacteria in the body
However, pathogens often do succeed in entering the body despite these defenses. In this case, the lymphatic system enables the immune system to respond appropriately.

How does the lymphatic system fight infection?

The lymphatic system produces white blood cells called lymphocytes. There are two types of lymphocytes: T cells and B cells. They both travel through the lymphatic system.
As they reach the lymph nodes, they come into contact with viruses, bacteria, and foreign particles in the lymph fluid.
Following contact, lymphocytes form antibodiesTrusted Source and start to defend the body. They can also produce antibodies from memory if they have already encountered the specific pathogen in the past. The lymphatic system and the action of lymphocytes form part of the body’s adaptive immune response. These are highly specific and long lasting responses to particular pathogens.

The lymphatic system consists of lymph vessels, ducts, nodes, and other tissues throughout the body.
Lymphatic vessels collect interstitial fluid and transport it to lymph nodes. These nodes filter out damaged cells, bacteria, and other foreign bodies.
Once this fluid passes out of the lymph nodes, it travels to larger vessels and eventually lymph ducts, which converge in the thoracic duct at the base of the neck.The thoracic duct returns filtered lymph into the bloodstream.

Other lymphatic tissues

Lymph nodes are not the only lymphatic tissues in the body. The tonsils, spleen, and thymus glands are also lymphatic tissues.

Thymus gland: The thymus gland is a lymphatic organ and an endocrine gland behind the sternum. It secretes hormones and is crucial to the production, maturation, and differentiation of immune T cells.

Tonsils: The tonsils produce lymphocytes and antibodies. They can help protect againstTrusted Source inhaled and swallowed foreign bodies.

Spleen: The spleen is not part of the connected lymphatic system, but it is lymphoid tissue. It produces white blood cells and filters the blood to remove microbes as well as old and damaged red blood cells and platelets.

Bone marrow: Bone marrow is not lymphatic tissue but is part of the lymphatic system because it is here that the B cell lymphocytes of the immune system mature.

What conditions and disorders affect the lymphatic system?

Many conditions can affect the various parts of your lymphatic system. Some happen during development before birth or during childhood. Others develop as a result of disease or injury. Some common diseases and disorders of the lymphatic system include:

Swollen lymph nodes (lymphadenopathy). Infection, inflammation and cancer cause swollen (enlarged) lymph nodes. Common infections that can cause enlarged lymph nodes include strep throat, mononucleosis, HIV and infected skin wounds. Lymphadenitis refers to lymphadenopathy that’s caused by an infection or inflammatory condition.

Swelling or accumulation of fluid (lymphedema). A blockage in your lymphatic system due to scar tissue from damaged lymph vessels or nodes can cause lymphedema. It can also happen when your lymph nodes have been removed to treat a condition like cancer. With lymphedema, fluid most commonly builds up in your arms or legs. It can be very mild or quite painful and disabling. People with lymphedema are at risk for serious and potentially life-threatening deep skin infections.

Cancers of the lymphatic system. Lymphoma is cancer of the lymph nodes that occurs when lymphocytes grow and multiply uncontrollably. There are several different types of lymphoma, including Hodgkin’s lymphoma and non-Hodgkin’s lymphoma. Cancerous tumors can also block lymphatic ducts or be near lymph nodes and interfere with the flow of lymph through the node.

Other disorders include:

Lymphangitis. This is an inflammation of your lymph vessels.

Lymphangioma. This is a condition that you’re born with. It involves the presence of noncancerous, fluid-filled bumps (cysts) under your skin due to overgrown lymph vessels.

Intestinal lymphangiectasia. Loss of lymph tissue in your small intestine leads to loss of protein, gamma globulins, albumin and lymphocytes.

Lymphocytosis. With this condition, there’s a higher-than-normal amount of lymphocytes in your body.

Lymphatic filariasis. This is a parasitic infection that causes the lymphatic system to malfunction.

Castleman disease. Castleman disease involves an overgrowth of cells in your body’s lymphatic system.

Lymphangioleiomyomatosis. This is a rare disease in which abnormal muscle-like cells begin to grow out of control in your lungs, lymph nodes and kidneys.

Autoimmune lymphoproliferative syndrome. This is a rare genetic disorder in which there’s a high number of lymphocytes in your lymph nodes, liver and spleen.

Mesenteric lymphadenitis. This is an inflammation of the lymph nodes in your belly (abdomen).

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The integumentary system is an essential part of the human body and performs several vital functions:

1. **Protection**: The skin acts as a protective barrier against injury, infection and ultraviolet radiation from the sun. The outer layer of the skin, called the epidermis, is especially important in this role.

2. **Temperature Regulation**: The skin helps maintain body temperature by regulating heat loss through sweating and dilation/constriction of blood vessels.

3. **Sensation**: The skin is a sensory organ that allows us to feel touch, heat, cold, and pain through millions of nerve receptors called sensory corpuscles.

4. **Excretion**: Through the sweat glands, the skin helps in the removal of waste products and toxins from the body.

5. **Synthesis of vitamin D**: The skin plays a crucial role in the production of vitamin D when exposed to sunlight. This vitamin is essential for bone health and the functioning of the immune system.

6. **Storage of lipids**: The deepest layer of the skin, the hypodermis, stores fat that acts as a thermal insulator and provides energy reserves.

7. **Homeostasis**: The skin helps maintain the internal balance of the body by regulating the loss of water and electrolytes.

8. **Social Communication**: The skin and its characteristics, such as color and texture, also play a role in visual communication and the expression of individual and cultural identity.

9. **Absorption**: Some substances can be absorbed through the skin, such as topical medications and chemicals present in the environment.

The integumentary system is made up of three main layers: the epidermis (outer layer), the dermis (middle layer), and the hypodermis (deeper layer). Also, within the dermis are hair follicles, sweat glands, and sebaceous glands.

Taking proper care of the integumentary system involves maintaining good personal hygiene, protecting the skin from the sun, moisturizing it regularly, and paying attention to any skin changes or problems.

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This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood.

What is the respiratory system?
The respiratory system is the network of organs and tissues that help you breathe. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.

How can I keep my respiratory system healthy?

Being able to clear mucus out of the lungs and airways is important for respiratory health.

What are the parts of the respiratory system?

Mouth and nose: Openings that pull air from outside your body into your respiratory system.

Sinuses: Hollow areas between the bones in your head.

Pharynx: Tube that delivers air from your mouth and nose to the trachea.

Trachea: Passage connecting your throat and lungs.

Bronchial tubes: connect into each lung.

Lungs: Two organs that remove oxygen from the air and pass it into your blood.

Diaphragm: Muscle that helps your lungs pull in air and push it out.

Ribs: Bones that surround and protect your lungs and heart.

What conditions affect the respiratory system?

Allergies: inflammation in your airways.

Asthma: inflammation in the airways that can make breathing difficult.

Infection: Infections can lead to pneumonia or bronchitis.

Aging: Lung capacity decreases as you get older.

How Do We Breathe?

Breathing starts when you inhale air into your nose or mouth. It travels down the back of your throat and into your windpipe, which is divided into air passages called bronchial tubes.

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The urinary system, also known as the urinary tract or renal system, consists of the kidneys, ureters, bladder, and the urethra.
Functions of the Urinary System:
1. *Filtration and Waste Removal:* The kidneys filter waste products, excess electrolytes, and toxins from the blood to form urine.
2. *Fluid and Electrolyte Balance:* The system regulates the balance of water, electrolytes (such as sodium and potassium), and pH levels in the body.
3. *Blood Pressure Regulation:* The kidneys play a role in regulating blood pressure by influencing blood volume and releasing hormones.
4. *Red Blood Cell Production:* The kidneys release a hormone called erythropoietin that stimulates the production of red blood cells in the bone marrow.

Main Organs of the Urinary System:
1. *Kidneys:* Bean-shaped organs that filter blood and produce urine.
2. *Ureters:* Tubes that carry urine from the kidneys to the bladder.
3. *Bladder:* A muscular sac that stores urine until it's ready to be expelled.
4. *Urethra:* The tube through which urine exits the body.

Taking Care of the Urinary System:
1. *Hydration:* Drink plenty of water to maintain proper fluid balance and help flush out toxins.
2. *Healthy Diet:* Consume a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats.
3. *Limit Salt and Sugar:* Excess salt and sugar can contribute to kidney problems and high blood pressure.
4. *Regular Exercise:* Engage in regular physical activity to maintain overall health and promote good circulation.
5. *Avoid Smoking and Excessive Alcohol:* Smoking and excessive alcohol consumption can harm the kidneys and urinary system.

Most Common Diseases of the Urinary System:
1. *Urinary Tract Infections (UTIs):* Infections in the urethra, bladder, or kidneys, often caused by bacteria.
2. *Kidney Stones:* Hard deposits of minerals and salts that form in the kidneys and can cause pain when passing.
3. *Chronic Kidney Disease:* Gradual loss of kidney function over time, often caused by conditions like diabetes and high blood pressure.
4. *Urinary Incontinence:* Involuntary leakage of urine due to weakened bladder muscles or other factors.
5. *Bladder Infections:* Inflammation and infection of the bladder, often causing frequent urination and discomfort.

Remember that proper hydration, a balanced diet, and regular medical check-ups are crucial for maintaining the health of your urinary system and preventing potential issues. If you experience any persistent urinary symptoms or concerns, it's recommended to consult a medical professional for proper diagnosis and treatment.

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Cartel (vertical) body positive mujer doodle moderno rosa marron blanco gris

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The digestive system is a group of organs that work together to break down food into smaller molecules that can be absorbed into the bloodstream and used by the body. The organs that make up the digestive system include the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus.

The digestive process begins in the mouth where food is chewed and mixed with saliva. The food then travels down the esophagus and into the stomach where it is further broken down by stomach acid and digestive enzymes. From there, it moves into the small intestine where nutrients are absorbed into the bloodstream. The remaining waste products then move into the large intestine where water is absorbed and feces are formed. Finally, feces are eliminated from the body through the rectum and anus.

The digestive system is important because it provides the body with the nutrients it needs to function properly. Proteins, fats, carbohydrates, vitamins, minerals, and water are all nutrients that are broken down by the digestive system.

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The cardiovascular system, also known as the circulatory system, is a vital network of organs and blood vessels responsible for transporting blood, oxygen, nutrients, and waste products throughout the body. Its main functions include delivering oxygen and nutrients to cells, removing waste products like carbon dioxide, regulating body temperature, and supporting the immune system. The key organs and components of the cardiovascular system include the heart, blood vessels, and blood.

1. Heart: The heart is a muscular organ located in the chest cavity. It functions as a pump that propels blood through the circulatory system. It has four chambers - two atria and two ventricles. The right side of the heart pumps oxygen-poor blood to the lungs for oxygenation, while the left side pumps oxygen-rich blood to the rest of the body.

2. Blood Vessels: Blood vessels are the intricate network of tubes that transport blood throughout the body. They can be categorized into three types: arteries, veins, and capillaries.

Arteries: Arteries carry oxygen-rich blood away from the heart to various parts of the body.

Veins: Veins carry oxygen-poor blood back to the heart from different body parts.

Capillaries: These are tiny, thin-walled vessels that connect arteries and veins, facilitating the exchange of nutrients, oxygen, and waste products between the blood and the body's cells.

3. Blood: Blood is a complex fluid that contains red blood cells, white blood cells, platelets, and plasma. Red blood cells carry oxygen, white blood cells fight infections, platelets aid in blood clotting, and plasma transports nutrients, hormones, and waste products.

Taking Care of the Cardiovascular System:

1. Healthy Diet: Consume a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats. Avoid excessive intake of saturated and trans fats, sodium, and added sugars.

2. Regular Exercise: Engage in regular physical activity to maintain a healthy weight, improve cardiovascular fitness, and strengthen the heart muscle.

3. Maintain a Healthy Weight: Excess weight puts strain on the heart and increases the risk of cardiovascular diseases.

4. Avoid Smoking: Smoking damages blood vessels, reduces oxygen supply, and increases the risk of heart disease.

5. Limit Alcohol Intake: Excessive alcohol consumption can lead to high blood pressure, heart failure, and other cardiovascular issues.

6. Manage Stress: Chronic stress can contribute to heart problems. Practice stress-reduction techniques such as meditation, deep breathing, yoga, or engaging in hobbies.

7. Regular Check-ups: Schedule regular health check-ups to monitor blood pressure, cholesterol levels, and overall cardiovascular health.

8. Hydration: Stay adequately hydrated to support blood circulation and overall bodily functions.

Common Cardiovascular Diseases:

1. Coronary Artery Disease (CAD): A condition where the blood vessels that supply the heart muscle (coronary arteries) become narrowed or blocked, often leading to chest pain (angina) or heart attacks.

2. Hypertension (High Blood Pressure): When the force of blood against artery walls is consistently too high, it can damage blood vessels and increase the risk of heart disease.

3. Stroke: A stroke occurs when blood supply to the brain is disrupted, leading to brain cell damage. It can result from a blocked artery (ischemic stroke) or a ruptured blood vessel (hemorrhagic stroke).

4. Heart Failure: This condition occurs when the heart can't pump blood effectively, leading to symptoms like fatigue, shortness of breath, and fluid retention.

5. Arrhythmias: Irregular heart rhythms can disrupt blood flow and cause issues like palpitations, dizziness, and fainting.

6. Peripheral Artery Disease (PAD): Narrowed blood vessels outside the heart, usually in the legs, can lead to reduced blood flow, pain, and numbness.

Remember that a healthy lifestyle and regular medical check-ups are crucial for maintaining cardiovascular health and preventing potential issues. If you have any concerns about your cardiovascular health, it's best to consult a medical professional.

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How Can I Help Keep My Endocrine System Healthy?

To help keep your endocrine system healthy:

Get plenty of exercise.

Eat a nutritious diet.

Go for regular medical checkups.

Talk to the doctor before taking any supplements or herbal treatments.

Let the doctor know about any family history of endocrine problems, such as diabetes or thyroid problems.

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Link for more information about Endocrine System

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What is the nervous system?

Your nervous system guides almost everything you do, think, say or feel. It controls complicated processes like movement, thought and memory. It also plays an essential role in the things your body does without thinking, such as breathing, blushing and blinking.

Your nervous system affects every aspect of your health, including your:

Thoughts, memory, learning, and feelings.

Movements, such as balance and coordination.

Senses, including how your brain interprets what you see, hear, taste, touch and feel.

Sleep, healing and aging.

Heartbeat and breathing patterns.

Response to stressful situations.

Digestion, as well as how hungry and thirsty you feel.

Body processes, such as puberty.

This complex system is the command center for your body. It regulates your body’s systems and allows you to experience your environment.

A vast network of nerves sends electrical signals to and from other cells, glands, and muscles all over your body. These nerves receive information from the world around you. Then the nerves interpret the information and control your response. It’s almost like an enormous information highway running throughout your body.

What does the nervous system do?

Your nervous system uses specialized cells called neurons to send signals, or messages, all over your body. These electrical signals travel between your brain, skin, organs, glands and muscles.

The messages help you move your limbs and feel sensations, such as pain. Your eyes, ears, tongue, nose and the nerves all over your body take in information about your environment. Then nerves carry that data to and from your brain.

Different kinds of neurons send different signals. Motor neurons tell your muscles to move. Sensory neurons take information from your senses and send signals to your brain. Other types of neurons control the things your body does automatically, like breathing, shivering, having a regular heartbeat and digesting food.

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Main organs

The nervous system has two main parts. Each part contains billions of cells called neurons, or nerve cells. These special cells send and receive electrical signals through your body to tell it what to do.

The main parts of the nervous system are:

Central nervous system (CNS): Your brain and spinal cord make up your CNS. Your brain uses your nerves to send messages to the rest of your body. Each nerve has a protective outer layer called myelin. Myelin insulates the nerve and helps the messages get through.

Peripheral nervous system: Your peripheral nervous system consists of many nerves that branch out from your CNS all over your body. This system relays information from your brain and spinal cord to your organs, arms, legs, fingers and toes. Your peripheral nervous system contains your:

Somatic nervous system, which guides your voluntary movements.

Autonomic nervous system, which controls the activities you do without thinking about them.

How to take care of it

Your nervous system is the command center for your entire body. It needs care to keep working correctly. See your doctor regularly, eat a healthy diet, avoid drugs, and only drink alcohol in moderation. The best way to avoid nerve damage from disease is to manage conditions that can injure your nerves, such as diabetes.

Most common disease

Some of the most common causes of nerve damage include:

Disease: Many infections, cancers, and autoimmune diseases like diabetes, lupus and rheumatoid arthritis can cause nervous system problems. Diabetes can lead to diabetes-related neuropathy, causing tingling and pain in the legs and feet. A condition called multiple sclerosis attacks the myelin around nerves in the CNS.

Stroke: A stroke happens when one of the brain’s blood vessels becomes blocked or suddenly bursts. Without enough blood, part of the brain dies. Then it can’t send messages via nerves. A stroke can cause nerve damage ranging from mild to severe.

Accidental injury: Nerves can be crushed, stretched, or cut in an accident. Car crashes and falls are common injuries that can damage nerves anywhere in your body.

Pressure: If a nerve is pinched or compressed, it can’t get enough blood to do its job. Nerves can be pinched or trapped for many reasons, such as overuse (as in carpal tunnel syndrome), a tumor, or structural problems like Sciatica.

Toxic substances: Chemotherapy medicines, illegal drugs, excessive alcohol and poisonous substances can cause peripheral neuropathy or nerve damage. People with kidney disease are more likely to develop nerve damage because their kidneys have a hard time filtering out toxins.

Aging process: As you get older, your neurons’ signals may not travel as fast as they used to. You may feel weaker, and your reflexes may slow down. Some people lose sensation in their fingers, toes or other parts of their body.

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The hormones created and released by the glands in your body’s endocrine system control nearly all the processes in your body. These chemicals help coordinate your body’s functions, from metabolism to growth and development, emotions, mood, sexual function and even sleep.

What is the endocrine system?
Your endocrine system is made up of several organs called glands. These glands, located all over your body, create and secrete (release) hormones.

Hormones are chemicals that coordinate different functions in your body by carrying messages through your blood to your organs, skin, muscles and other tissues. These signals tell your body what to do and when to do it.

What does the endocrine system do and how does it work?
Your endocrine system continuously monitors the amount of hormones in your blood. Hormones deliver their messages by locking into the cells they target so they can relay the message.

The pituitary gland senses when your hormone levels rise, and tells other glands to stop producing and releasing hormones. When hormone levels dip below a certain point, the pituitary gland can instruct other glands to produce and release more. This process, called homeostasis, works similarly to the thermostat in your house. Hormones affect nearly every process in your body, including:

1. Metabolism (the way you break down food and get energy from nutrients).

2. Growth and development.

3. Emotions and mood.

4. Fertility and sexual function.

5. Sleep.

6. Blood pressure.

Sometimes glands produce too much or not enough of a hormone. This imbalance can cause health problems, such as weight gain, high blood pressure and changes in sleep, mood and behavior. Many things can affect how your body creates and releases hormones. Illness, stress and certain medications can cause a hormone imbalance.

What are the parts of the endocrine system?
The endocrine system is made up of organs called glands. Glands produce and release different hormones that target specific things in the body. You have glands all over your body, including in your neck, brain and reproductive organs. Some glands are tiny, about the size of a grain of rice or a pea. The largest gland is the pancreas, which is about 6 inches long.

The main glands that produce hormones include:

Hypothalamus: This gland is located in your brain and controls your endocrine system. It uses information from your nervous system to determine when to tell other glands, including the pituitary gland, to produce hormones. The hypothalamus controls many processes in your body, including your mood, hunger and thirst, sleep patterns and sexual function.

Pituitary: This little gland is only about the size of a pea, but it has a big job. It makes hormones that control several other glands such as the thyroid gland, adrenal glands, ovaries and testicles. The pituitary gland is in charge of many different functions, including how your body grows. It’s located at the base of your brain.

Thyroid: Your thyroid is a butterfly-shaped gland in the front of your neck. It’s responsible for your metabolism (how your body uses energy).

Parathyroid: These four tiny glands are no larger than a grain of rice. They control the level of calcium in your body. For your heart, kidneys, bones and nervous system to work, you need the right amount of calcium.

Adrenal: You have two adrenal glands, one on top of each kidney. They control your metabolism, blood pressure, sexual development and response to stress.

Pineal: This gland manages your sleep cycle by releasing melatonin, a hormone that causes you to feel sleepy.

Pancreas: Your pancreas is part of your endocrine system, and it plays a significant role in your digestive system too. It makes a hormone called insulin that controls the level of sugar in your blood.

Ovaries: In women, the ovaries release sex hormones called estrogen, progesterone and testosterone. Women have two ovaries in their lower abdomen, one on either side.

Testes: In men, the testes (testicles) make sperm and release the hormone testosterone. This hormone affects sperm production, muscle strength and sex drive.

What conditions and disorders affect the endocrine system?

Dozens of conditions can cause issues in the endocrine system. These conditions can lead to health problems all over the body. Some of the most common disorders are:

1. Diabetes: This endocrine disorder affects the way your body uses the energy from the food you eat. Diabetes develops when the pancreas doesn’t make enough of a hormone called insulin, or insulin doesn’t work as it should.

2. Thyroid disorders: Several conditions can affect the function of the thyroid gland. Hypothyroidism happens when the thyroid doesn’t produce enough hormones. Hyperthyroidism occurs when it creates too many hormones.

3. Hypogonadism (low testosterone): In men, hypogonadism can cause erectile dysfunction. It can also cause memory and concentration problems, changes in muscle strength and low sex drive. It happens when the testes do not produce enough of the sex hormone testosterone.

4. Polycystic ovary syndrome (PCOS): A hormonal imbalance causes women with PCOS to have irregular periods, abnormal hair growth, excess acne and weight gain. It can lead to diabetes, increased risk of metabolic syndrome and infertility.

5. Osteoporosis: When a woman’s ovaries don’t produce enough estrogen, bones become brittle and weak. Although it is more common in women, men sometimes have osteoporosis when testosterone levels get too low. People with an overactive parathyroid gland (hyperparathyroidism) may also have weak bones.

Chemicals called endocrine disrupters can also affect the endocrine system. These chemicals appear everywhere in pesticides, plastics, cosmetics and even our food and water. Endocrine disrupters cause a wide range of problems throughout the body by changing how hormones send messages.

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How to take care of it?

To keep your skeletal system strong and healthy, you should:

Get plenty of vitamin D and calcium in your diet (try milk, yogurt or almonds) to keep bones strong.

Drink plenty of water to help keep tissues healthy.

Exercise regularly to strengthen bones and joints.

Stay at a healthy weight to avoid putting extra pressure on your bones and cartilage.

Wear protective gear during contact sports such as football and hockey.

Be cautious on stairs to avoid falls.

Most common diseases

Arthritis: Age, injury, and medical conditions such as Lyme disease can lead to arthritis, a painful wearing down of joints.

Fracture: Disease, a tumor, or trauma can put stress on a bone, causing it to break.

Osteosarcoma: Cancer that forms in the bones can cause tumors that may weaken and break bones.

Osteoporosis: Bone loss caused by not getting enough calcium can lead to fragile and brittle bones, known as osteoporosis.

Sprains and tears: Age, disease and trauma can cause connective tissue to overstretch and tear.

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The skeletal system is your body’s central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It’s also called the musculoskeletal system.

What does the skeletal system do?

The skeletal system has many functions. Besides giving us our human shape and features, it:

Allows movement: Your skeleton supports your body weight to help you stand and move. Joints, connective tissue and muscles work together to make your body parts mobile.

Produces blood cells: Bones contain bone marrow. Red and white blood cells are produced in the bone marrow.

Protects and supports organs: Your skull shields your brain, your ribs protect your heart and lungs, and your backbone protects your spine.

Stores minerals: Bones hold your body’s supply of minerals like calcium and vitamin D.