Do you know how to be street smart? Being street smart means knowing how to keep yourself safe from strangers when you're alone or with other kids. Whether you're walking to school or to the bus, ...

Gynecology ("gyn" for short) is a medical field that focuses on the female reproductive system. A gyn checkup is a yearly health check — like a regular eye exam or dental checkup. Doctors often call ...

Just about every guy wonders how he measures up "down-there." Here's the lowdown for any guy who's ever worried about whether his penis is a normal size. There is a wide range of normal penis sizes.

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 ...

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 Which part of your body lets ...

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 ...

Medically reviewed by: Melanie L. Pitone, MDThis link opens in a new tab Learn About Emergency Medicine at Nemours Children's HealthThis link opens in a new tab Before you get behind the wheel, get ...

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 Vaginitis is inflammation ...

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 ...

Diaper rash is a common condition in babies where the skin covered by the diaper is sore, red, scaly, and tender. Most cases will clear up with simple changes in diapering. Usually, diaper rash is the ...

What Are the Spleen and Lymphatic System? The spleen is located in the upper left part of the belly under the ribcage. It helps protect the body by clearing worn-out red blood cells and other foreign ...

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 We see and hear about hearts ...