What Do Fingernails and Toenails Do? You may not think about your nails, unless you just painted them blue or your mom says it's time to trim them. But your nails have a job to do. The hard surface of ...

Every minute that they're awake awake, babies take in the sights, sounds, smells, and feel of the world around them. Although it may take a while to grasp what all this information means, your baby ...

What Is a Stem Cell Transplant? A stem cell transplant is when doctors put healthy stem cells into someone's bloodstream to replace their stem cells. It can take a while to feel better after a stem ...

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 ...

We see and hear about hearts everywhere. A long time ago, people even thought that their emotions came from their hearts, maybe because the heart beats faster when a person is scared or excited. Now ...

We've all had cuts and scrapes that we can take care of at home. But what about more serious wounds — the kind that involve stitches or a hospital stay? The deeper, larger, or dirtier a wound is, the ...

What Is the Digestive System? Food is our fuel, and its nutrients give our bodies' cells the energy and substances they need to work. But before food can do that, it must be digested into small pieces ...

Click through this slideshow to learn more about the kidneys and urinary tract. The bean-shaped kidneys filter waste products out of the bloodstream and dispose of them by creating urine. Urine is ...

Sounds are everywhere, and you have two cool parts on your body that let you hear them all: your ears! So how do you hear? Watch this video to step inside an ear.

Strep throat is an infection caused by a type of bacteria called group A strep (or GAS). Strep throat usually requires a trip to the doctor and treatment with antibiotics. With the proper medical care ...

Histamine - a chemical found in some of the body's cells - causes many of the symptoms of allergies, such as a runny nose or sneezing. When a person is allergic to a particular substance, such as a ...

The thyroid (say: THYE-royd) is a gland, which is an organ that makes special chemicals called hormones (say: HOR-moans). The thyroid is shaped like a little butterfly or bow tie and it sits under the ...