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Poop is brown due to a pigment called stercobilin, which is from the breakdown of bilirubin, which is from the breakdown of red blood cells inside the digestive system

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Most bone diseases are terminal or require medical intervention. However, some, like bone lesions, can go away on their own.

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Different types of energy, their properties, and how they are achieved

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Different types of energy, their properties, and how they are achieved

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Part 4: Extra energy types

ATP energy is the result of the chemical reaction known as cellular respiration, where oxygen and glucose go into a cell and it makes water, carbon dioxide, and ATP energy. This process is the way most cells get energy, in the form of ATP.

Stored energy is similar to potential energy, just that this type isn't always actively about to be used, but stored until needed. Humans have stored energy after we sleep and eat.

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Different types of energy, their properties, and how they are achieved

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Different types of energy, their properties, and how they are achieved

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Part 3: Electrical energy

These types of energy are forms of obtaining electrical energy.

Solar panels work by taking the light, radiant, and thermal energy from the sun and converting it into electrical energy. (For a more complicated explanation, look up the photovoltaic effect.)

Wind turbines work by getting energy from spinning with the wind. The spinning powers a generator to produce electric energy.

Hydroelectric dams work similarly to wind turbines, the only difference is that hydroelectric dams use flowing water to power the generator instead of wind.

Biomass involves taking natural resources such as wood and burning them to get thermal energy to convert into electrical energy. This is also known as fossil fuels.

Geothermal methods involve drilling into the earth and using the heat in the crust for thermal energy that we convert into electrical energy.

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Different types of energy, their properties, and how they are achieved

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Different types of energy, their properties, and how they are achieved

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Part 2: Kinetic energy

Light and radiant energy are energy from electromagnetic waves that produce light and radiation. Examples include the sun and lightbulbs.

Sound energy is energy from sound waves. These vibrations traveling through the air contain energy. Examples include output from a speaker or someone talking.

Kinetic energy (motion energy) is energy that objects possess through movement. Examples include rolling a bowling ball or spinning a top.

Thermal energy (heat energy) is energy from the movements of molecules inside a substance. As we learned in 6th grade, molecules move faster when there is more heat. These movements produce energy, the hotter the more. Examples include fire and the sun (heat, not light).

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Different types of energy, their properties, and how they are achieved

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Different types of energy, their properties, and how they are achieved

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Part 1: Potential energy

Chemical energy is energy stored in the bonds of molecules. Examples are gasoline, batteries, and food.

Mechanical energy is energy from objects moving within a system. Examples include a pen (a clicking mechanism) and gears.

Nuclear energy is energy achieved through atomic reactions. Examples include nuclear fission and nuclear power plants.

Gravitational energy is energy due to gravitational forces. Examples include apples falling from trees and falling after jumping.

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Stomach acid is made by cells inside the stomach, and these cells will make stomach acid until the day we die. The cells can't be destroyed by the hydrochloric acid because there is a mucus membrane protecting them.

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The shaft of the bone is called the diaphysis, and it tolerate strong forces and not bend or break

It is composed of compact bone tissue, and spongy bone tissue.

Inside the diaphysis there is the medullary cavity, which houses different bone marrow at different time periods

There is a thin membrane surrounding the cavity called endosteum

At each end of the bone are the epiphysis, which is mainly comprised of spongy bone tissue

Inside the spongy bone tissue contains red bone marrow which produce, red and white blood cells with platelets.

The epiphysis is more wider because it forms joints with other bones and when it is wider it provides more stability

At the end of the epiphysis is the articular cartilage, which provides shock absorption, cushioning, and less friction

Because articular cartilage doesn’t have a vast red blood cell suipply, it take time to heal

There is a thin fiber membrane about periosteum that covers the entire surface of the bone except where the articular cartilage is

This membranes allows for attachment of ligaments, contains cells, and has many nerve fibers

It can be painful when bruised because of nerve cells

Bones have arteries and veins inside of them

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The respiratory system is also connected with circulatory, skeletal, muscular, and nervous

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The respiratory system is also connected with circulatory, skeletal, muscular, and nervous

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Blood vessels deliver oxygen

Ribcage protects lungs

Diaphragm, Intercostal, and Abdominal Wall Muscles help expand and contract the nasal cavity.

The nervous system regulate the breathing rate by using pH

pH scale is based on hydrogen ion concentration, acidic is lower, alkaline is higher.

The increase of CO2 causes the increase the hydrogen ion concentration

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the energy solution can make a lot of energy because of making stuff move and can also warm stuff up since body temperature. so what other stuff can energy do?

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The diaphragm is a muscle located underneath the lungs. The diaphragm contracts and expands to help you inhale and exhale. Diaphragms are also what you are using when you cough, so if your chest hurts after your cough, that's your diaphragm. Hiccups are just the diaphragm suddenly contracting, separating the chest and the abdomen.

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The heart is the organ that pumps blood. The blood circulates (hence the name "circulatory system") everywhere around the body. Blood helps keep us warm, carries nutrients and oxygen everywhere in the body, plugs wounds, and fights infection.

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There are three types of blood vessels:

Arteries take blood away from the heart.

Veins take blood to the heart.

Capillaries are the most important ones. Capillaries are thinner than veins and arteries and live in the villi in the small intestine. Because they are thinner, they allow for nutrients to diffuse into the bloodstream.

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Cellular Respiration is the process in which cells turn glucose and oxygen into carbon dioxide, water, and most importantly, ATP energy. This is how most cells get their energy, so it is quite important.

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Blood is made up of 4 things:

Red blood cells carry oxygen to the organs and take away CO2. They also give blood its red color. Red blood cells make up about 55% of blood.

Platelets help repair cuts and wounds by making a plug. A complete plug can be made in 3-5 minutes, but it doesn't last very long. Platelets are part of the around 1% that also contains white blood cells.

White blood cells help fight infection. They can detect when diseases enter the body, and when they detect them, they start going to it right away. White blood cells are part of the around 1% that also contains platelets.

Plasma is the liquid that holds all of the blood cells. Plasma is also very valuable, and you can sell yours to make money. Plasma makes up around 45% of blood.

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Transports blood to and away from heart

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How fast do the villi absorb the nutrients?

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How fast do the villi absorb the nutrients?

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the small intestine has little finger protrusions that suck up nutrients from food

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The large intestine is also know as the colon, which houses friendly bacteria. It’s main use is to reuse water by absorbing it back. The very end of the large intestine is the rectum, where feces will remain there till it is removed by the anus.

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The large intestine is also know as the colon, which houses friendly bacteria. It’s main use is to reuse water by absorbing it back. The very end of the large intestine is the rectum, where feces will remain there till it is removed by the anus.

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mechanical digesttion breaks down food by astcualy crunching it down

chemical digestion breaks down food by chemically crunching iit down and does cemical reaction

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,:3

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The stomach is a muscular sack that is able to hold up to 2-4 liters of food. Food is mechanically broken down in the stomach by the contracting and churning walls of the stomach. The chemical breakdown of the food starts by releasing the hormone of gasterin, which stimulates the secretion of hydrochloric acid and pepstinigen 

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The stomach is a muscular sack that is able to hold up to 2-4 liters of food. Food is mechanically broken down in the stomach by the contracting and churning walls of the stomach. The chemical breakdown of the food starts by releasing the hormone of gasterin, which stimulates the secretion of hydrochloric acid and pepstinigen 