Organs of the body for kids

Thursday, May 4, 2017


Your heart is has a very important job. It pumps blood throughout your body. The blood carries oxygen, glucose, and other nutrients to each cell and removes waste like carbon dioxide
Your heart has four chambers.
The top chambers are called atrium's and the bottom chambers are called ventricles.
In between each chamber are valves.
Valves control the flow of blood. They allow blood to flow in one direction but stop the flow of blood in the opposite direction.
Your heart is made of cardiac muscle and pumps 24 hours a day every day.
Your heart is about the size of your fist.


The lungs are part of the respiratory system. The respiratory system breathes in oxygen from the atmosphere and transfers this oxygen into the bloodstream, and helps the human body release carbon dioxide from the bloodstream into the atmosphere

You have two lungs. A left and a right lung and the are located beside your heart. Your heart pumps blood to the lungs where oxygen is exchanged for carbon dioxide.
Your right lung is larger than your left lung.
Your lungs weigh around 3 pounds.

Air travels down your trachea and into two tubes called the bronchus. You have a left and right bronchus. The bronchi branch into bronchi which branch into even smaller tubes called bronchioles.
At the end of the bronchioles are found tiny air sacs called alveoli.
At the alveoli, oxygen is exchanged for carbon dioxide.
The oxygen and carbon dioxide diffuse into and out of your blood.
Because the lungs have millions of alveoli, they actually feel like a heavy sponge.

Your lungs are divided into sections called lobes.
Your right lung has three lobes and your left lung has two lobes

Your autonomic nervous system controls the rate that your lungs inflate and deflate.
The lungs inflate with the help of an expanding rib cage and a muscle called the diaphragm
When the diaphragm moves down the lungs inflate, and when the diaphragm moves up the lungs deflate. You breathe around twelve to twenty times a minute.


The spleen is located in the upper far left part of the abdomen, to the left of the stomach. The spleen is about the size of the fist, has a purple color, and is about four inches in length.
Your spleen has several functions.
The spleen filters the blood.
It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there.
The spleen holds reserve blood in case of significant bleeding, much like a blood-filled balloon, and acts as a reserve source of extra blood.
The spleen also helps the immune system to recognize and attack foreign pathogens and allergens.

While most people are somewhat healthier with a spleen, it is absolutely possible to have a normal life without a spleen.
When damaged or when fighting a series infection, the spleen can enlarge from the size of a softball to the size of a volleyball.


The pancreas is located in the abdomen area.
The pancreas looks like a cross between corn on the cob and a banana.
After food enters the top section of the small intestines called the duodenum, the pancreas gets to work. The pancreas secretes a fluid that contains several enzymes that help break down the food. These enzymes allow your intestine to break down the food into smaller molecules.
Another major job of the pancreas is the production of insulin. This hormone is very important because it signals the liver to absorb glucose which in turn lowers your glucose levels.


Your stomach is part of your digestive system. When you eat food travels down your esophagus and enters your stomach. Your stomach is located between your esophagus and the top of your intestines. Your stomach is an oval shaped muscular sack.It is roughly twelve inches long and six inches wide.
Your stomach digests and breaks down your food before it enters the small intestine.The stomach converts your food into a liquidy substance called chyme. It uses a muscular action called peristalsis, along with hydrochloric acid, and enzymes to break down food.
The hydrochloric acid also kills many microbes that may be on the food.
The stomach also contains mucus that protects the lining of the stomach from the acid
Food enters and exits the stomach through valves called sphincters. Food passes into the stomach through the cardiac sphincter and exits through the pyloric sphincter.
Food may stay in the stomach for three or four hours.
Your stomach is one stop along the path of digestion and is a predigestion station but is very important and allows your intestine to digest the food more effectively.

Large Intestines

After passing through the small intestine food travels into the large intestine.
 Your large intestine is roughly 9 feet in length but gets its name because it has a larger diameter than the small intestine.
Your large intestine is also called the colon.
The large intestine is divided into several sections.
The beginning section is called the cecum.
Food from the small intestine travels to the cecum.
The caecum is a little like a pouch and receives the food material the ileum
From the caecum, food travels upward into the ascending colon.
Water and salt are absorbed in the colon.
The horizontal section of the large intestine is called the transverse colon.
After traveling across the transversal colon food descends into the descending colon.
The feces is stored in the sigmoid until it travels to the rectum and then exits the body.
One of the main jobs of the large intestine is to absorb water and salt.
In addition, vitamin K is produced in the colon with the help of bacteria.
Vitamin K helps your blood clot, builds your bones, and aids in keeping correct insulin levels.
Your large intestine is home to billions of bacteria.


The liver is the largest internal organ.It is very important to all organisms that have a liver and we would quickly die without a liver.
The liver has many functions.
It aids in digestions, stores important nutrients, and is a manufacturing plant.
The liver produces a green substance called bile. Bile is used in the large intestine to break down fats. Bile is stored in the gall bladder.
The liver helps detoxify toxins.
It detoxes alcohol and converts ammonia into a less toxic urea
During exercise it break down glucose that it stores into glycogen
It stores vitamin B12 iron and copper
It produces blood clotting proteins and many hormones.
It also helps the immune system.
Your organ is a superstar organ and works hard to keep us alive


Your kidneys are two bean-shaped organs found on the left and right side of your vertebra.
Your kidneys are important organs because they filter your blood.
Your blood passes through the kidneys 20-25 times each hour
The renal artery delivers blood to the kidney and the renal vein moves blood away from the kidneys.
As the blood passes through your kidneys the kidneys
Removes waste material from the blood and either releases water and salt or conserves it.
Your kidneys also help control your blood pressure and can stimulate the bone marrow to make more red blood cells
Attached to each kidney are two tubes called ureters that carry waste material to the bladder.
The waste filtered out by the kidneys which are called urine travels down the ureter and into your bladder.
When the bladder fills up it signals your brain that it is time to go to the restroom.

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