You know how important your heart is, so it's no wonder people worry when they hear someone has heart problems. Heart disease, also called cardiovascular (say: kar-dee-oh-VAS-kyoo-lur) disease, mainly ...

What Are the Kidneys and Urinary Tract? The urinary tract is one of the systems that our bodies use to get rid of waste products. The kidneys are the part of the urinary tract that makes urine (pee).

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 ...

To help your child get ready for a blood test, find out if they need to fast (not eat or drink) or should stop taking medicines before the test. Explain what to expect during the test. If your child ...

Children hear about what's going on in the world through social media, friends, or adults' conversations. Sometimes the news is uplifting — like kids their age taking a stand on social or ...

The nervous system controls everything you do, including breathing, walking, thinking, and feeling. This system is made up of your brain, spinal cord, and all the nerves of your body. The brain is the ...

It’s normal for someone who learns they have diabetes to have lots of different feelings. Some kids are eager to express their feelings. Others may need encouragement to share what’s on their mind. Be ...

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?

It’s great to feel good about yourself. To describe this, people often use words like self-confidence or self-esteem. Feeling good about yourself doesn’t mean boasting or bragging about how great you ...

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, ...

It’s normal for people to masturbate (touch or rub their own genitals because they like the way it feels). Some people do it to relieve stress or tension. It’s nothing to be ashamed of or embarrassed ...

Which part of your body lets you read the back of a cereal box, check out a rainbow, and see a softball heading your way? Which part lets you cry when you're sad and makes tears to protect itself?