Coughing is a healthy reflex that helps clear the airways. A severe cough or one that lasts more than a week requires a medical checkup. But many coughs are caused by a virus that just needs to run ...

What Is the Digestive System? The digestive system breaks down the food we eat into tiny parts to give us fuel and the nutrients we need to live. As food breaks down, we get amino acids from protein, ...

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 ...

It's easier to agree than disagree. But we can learn a lot from conversations where we don't see eye to eye — if we can listen and talk rationally, that is. Unfortunately, many us either shy away ...

What Are the Lungs and Respiratory System? The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out ...

The male reproductive system is made up of the parts inside and outside the body that help a male make a baby. Both the male and female reproductive system are needed for this. The male reproductive ...

Say hello to Chloe and Nurb and let them take you on a tour of the human body. You'll find out how the body's organs work and learn about body systems like the digestive system and brain and nervous ...

Rashes can be caused by viruses and bacteria, medicines, heat, allergies, and many other things. Rashes often are only minor problems, but some can be serious and need medical treatment.

How much do you know about the urinary system, which makes pee? Find out by taking this quiz!

Everybody knows that some organs in the human body are necessary for survival: you need your brain, your heart, your lungs, your kidneys... KIDNEYS? Absolutely. Even though you won't find a ...

What Is the Respiratory System? When we breathe, the respiratory system takes in oxygen and sends out carbon dioxide. The cells in our bodies need fresh oxygen to stay alive. As cells do their jobs, ...

What Is a Perforated Eardrum? A perforated eardrum is a tear or hole in the ear's tympanic membrane (the eardrum). A perforated (PER-fer-ate-id) eardrum can hurt, but most heal in a few days to weeks.