The temporomandibular joint (TMJ) connects the lower jaw to the skull. You can feel your two TM joints and their movement by placing your fingers directly in front of your ears and opening your mouth.

From enjoying the great outdoors to playing sports safely, here's how to protect yourself and deal with emergencies.

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, ...

Sounds are everywhere, and you have two cool parts on your body that let you hear them all: your ears! The outer ear is made up of the pinna — also called the auricle (say: OR-ih-kul) — and the ear ...

You've probably heard countless times how exercise is "good for you." But did you know that it can help you feel good too? Getting the right amount of exercise can rev up your energy levels and even ...

What's the Urinary System (Urinary Tract)? The urinary system (also called the urinary tract) is one of the systems our bodies use to get rid of waste products. The kidneys are the part of the urinary ...

Whatever your child's age, it's important to be consistent when it comes to discipline. If parents don't stick to the rules and consequences they set up, their kids aren't likely to either. Here are ...

How Does the Brain Work? And How Does the Nervous System Work? How do you remember the way to your friend's house? Why do your eyes blink without you ever thinking about it? Where do dreams come from?

Your eyes see, but how does vision happen? Find out how the eyes and brain work together in this eye video.

Kids have easy access to hundreds of TV stations and millions of Internet sites. They can buy or download countless video games and apps. They can stream movies on many devices and watch YouTube or ...

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 ...

Toxic synovitis has a scary name, but it's not a scary condition. This temporary inflammation of the hip can cause limping and pain in the hip and leg. This can be unpleasant for a child and ...