Both the brain and the spinal cord are protected by bone: the brain by the bones of the skull, and the spinal cord by vertebrae, a set of ring-shaped bones. They're both cushioned by layers of ...

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!

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 ...

As with other skills and milestones, the age at which kids learn language and start talking can vary. Knowing a bit about speech and language development can help parents figure out if there's cause ...

Students who need extra help and support in school may be eligible for special education services in the form of an individualized education program (IEP). This program is offered free of charge to ...

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 ...

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 ...

How Do I Take a Rectal Temperature? The best way to take a temperature in infants and young children is by taking a rectal temperature. Don't worry — it's a simple and safe process.

Most blood tests take only a few minutes. They’re done at some doctor’s offices, and at community labs, diagnostic centers, and hospitals. A doctor, nurse, or phlebotomist (fleh-BOT-eh-mist, someone ...

Your baby is finally coming home from the hospital after a stay in the NICU. Before you leave, learn all you can from the care team about caring for your baby so that you can feel confident at home.

Why are my breasts different sizes? Is there anything I can do about it? It is normal to have different sized breasts. If you have just started developing breasts, one breast may grow more quickly ...

Alopecia areata (al-uh-PEE-shuh air-ee-AH-tuh) is a condition that causes hair loss on the scalp and sometimes elsewhere on the body, such as the eyebrows and eyelashes. The condition is not ...