The nose, throat, and lungs are just a few parts of the body that make up the respiratory system. They work together to bring oxygen into the body and take carbon dioxide (a waste product) out.

What Does the Heart Do? The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After ...

The digestive process starts even before the first bite of food. Find out more about the digestive system and how our bodies break down and absorb the food we eat.

The male reproductive system is made up of the parts inside and outside a male’s body that help make a baby. Learn about them and how they work.

Take this quiz about your digestive system, which handles the food you eat.

Malrotation is a type of obstruction caused by abnormal development of the intestines while a fetus is in the womb. Find out more about this condition and the complications it can cause.

Most spider bites cause mild reactions, but some can cause serious illness or allergic reactions. Here's what to do if you think your child was bitten by a spider.

or tumor in the nose an eye injury How Is a Tear-Duct Blockage Diagnosed? The doctor will do an exam and ask about symptoms. Sometimes they do a painless test using a dye to see if the tear duct is ...

Glucose is the main type of sugar in the blood and is the major source of energy for the body's cells. Glucose comes from the foods we eat or the body can make it from other substances. Glucose is ...

Lead is toxic and especially harmful for a developing fetus. Fortunately, exposure to high lead levels is rare in the United States.

Fear is a normal human reaction that protects us by signaling danger and preparing us to deal with it. Get the facts about fears and phobias and what causes them.

Your brain is the boss of your body and runs the whole show. Learn more in this article for kids.