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 digestive system breaks ...

Stretch marks are fine lines in the skin that happen when quick growth or weight gain stretches the skin (like during puberty). Skin is usually fairly stretchy, but when it's overstretched, the normal ...

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 ...

What's the Nose Do? And How Do You Smell Those Smells? A batch of cookies fresh of the oven. A gym bag full of dirty clothes. How do you smell these smells and thousands more? Your nose, of course. It ...

Medically reviewed by: Larissa Hirsch, MDThis link opens in a new tab Learn About Cardiology (Heart Care) at Nemours Children's HealthThis link opens in a new tab The heart is an organ that’s a pump, ...

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 How do you remember the way ...

Medically reviewed by: Ryan J. Brogan, DOThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab Toxic synovitis has a scary name, but ...

Medically reviewed by: Larissa Hirsch, MDThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab Help kids avoid anything they're ...

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: Yamini Durani, MDThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab ...

Medically reviewed by: Larissa Hirsch, MDThis link opens in a new tab Learn About Primary Care Pediatrics at Nemours Children's HealthThis link opens in a new tab When we breathe, the respiratory ...

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 heart is a pump, usually ...