What Is Scheuermann's Kyphosis? Scheuermann's kyphosis (kye-FOH-sis) is a condition affecting the upper back. It makes the upper back rounded so it looks hunched over. It's sometimes called ...

The thyroid is a small gland below the skin and muscles at the front of the neck, at the spot where a bow tie would rest. It is soft, brownish red, and weighs less than an ounce. Its two halves (lobes ...

Are there any parents who haven't felt complete and utter love for their toddler and, at the same time, frustration and anger? Our beloved little ones test our nerves because they're testing ...

Parents might be surprised by how their newborn looks. Before birth, babies are immersed in amniotic fluid and folded up in an increasingly tight space. Then in most deliveries, they're pushed through ...

It's true. Your teeth are an important part of your smile, and they also help you chew foods like crunchy apples or yummy pizza. Brushing and flossing are important, but you also need to visit your ...

How Does Air Enter the Respiratory System? Air enters the respiratory system through the nose or the mouth. If it goes in the nostrils (also called nares), the air is warmed and humidified. Tiny hairs ...

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 ...

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?

Girls have lots of questions about the body changes of puberty. When will my breasts grow? What's the "normal" age to get your first period? Watch this video and find out!

Even if you're lucky enough to have perfect 20/20 vision, taking care of your eyes and protecting them against injury or infection are important parts of keeping your peepers perfect. One of the best ...

Without the nerve cells in skin, people couldn't feel warmth, cold, or other sensations. Every square inch of skin contains thousands of cells and hundreds of sweat glands, oil glands, nerve endings, ...

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 ...