Medically reviewed by: Elana Pearl Ben-Joseph, MDThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab There are no set rules about ...

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 ...

What Are the Lungs and Respiratory System? The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out ...

What's the Urinary System? And What's Pee? You drink, you pee. But urine is more than just that drink you had a few hours ago. If you've ever wondered where pee comes from, this movie has the answers!

Medically reviewed by: Larissa Hirsch, MDThis link opens in a new tab Learn About Ophthalmology (Eye Care) at Nemours Children's HealthThis link opens in a new tab A tear duct is a small tube that ...

Everyone feels stressed out at times. You can avoid getting too stressed out by handling everyday pressures and problems, asking for help when you need it, and making time to relax.

Medically reviewed by: Patrick C. Barth, MDThis link opens in a new tab Learn About Otolaryngology (Ear, Nose, & Throat Care) at Nemours Children's HealthThis link opens in a new tab A perforated ...

Overwhelmed by classwork? Scared because your parents are splitting up? Worried about a friend? Feel like you don't fit in? With a problem on your mind, you may lose sleep. You might find you can't ...

Medically reviewed by: KidsHealth Medical ExpertsThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab Every single person has a ...

Medically reviewed by: KidsHealth Medical ExpertsThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab The urinary system (also ...

Medically reviewed by: Elana Pearl Ben-Joseph, MDThis link opens in a new tab Learn About Pediatric Neurology (Brain & Nervous System Care) at Nemours Children's HealthThis link opens in a new tab ...

Medically reviewed by: KidsHealth Medical ExpertsThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab The endocrine system is made ...