Learn About Fetal Medicine at Nemours Children's HealthThis link will open in a new window One of the first tests you may have when you’re pregnant is a blood test to check your blood type and Rhesus ...

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, ...

Medically reviewed by: KidsHealth Medical ExpertsThis link will open in a new window Learn About Primary Care Pediatrics at Nemours Children's HealthThis link will open in a new window Everybody knows ...

Medically reviewed by: Maureen F. Edelson, MDThis link will open in a new window Learn About Pathology (Lab Services) at Nemours Children's HealthThis link will open in a new window Blood can't be ...

Medically reviewed by: Rupal Christine Gupta, MDThis link will open in a new window Learn About Sports Medicine at Nemours Children's HealthThis link will open in a new window Soccer is an exciting, ...

Medically reviewed by: KidsHealth Medical ExpertsThis link will open in a new window Learn About Primary Care Pediatrics at Nemours Children's HealthThis link will open in a new window Every single ...

Medically reviewed by: KidsHealth Medical ExpertsThis link will open in a new window Learn About Primary Care Pediatrics at Nemours Children's HealthThis link will open in a new window Air enters the ...

It's easier to agree than disagree. But we can learn a lot from conversations where we don't see eye to eye — if we can listen and talk rationally, that is. Unfortunately, many us either shy away ...

You've probably heard countless times how exercise is "good for you." But did you know that it can help you feel good too? Getting the right amount of exercise can rev up your energy levels and even ...

Medically reviewed by: KidsHealth Medical ExpertsThis link will open in a new window Learn About Primary Care Pediatrics at Nemours Children's HealthThis link will open in a new window We see and hear ...

Medically reviewed by: Larissa Hirsch, MDThis link will open in a new window Learn About Cardiology (Heart Care) at Nemours Children's HealthThis link will open in a new window The heart is an organ ...

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 ...