Biceps curl with resistance tubing

Baby

A baby's soft spots (fontanels) close when the skull bones fuse together. See how.

Narcan Nasal Spray: How to use demonstration

Narcan is used for the emergency treatment of opioid overdose, to reverse the life-threatening effects of the opioid.

• Narcan

Humira: An Overview of FDA-Approved Uses and Mechanism

A brief description of common uses for Humira and how it works in rheumatoid arthritis and Crohn's disease.

• Humira

What happens during obstructive sleep apnea?

Sleep apnea -- Watch this video to see how snoring and obstructive sleep apnea occur.

• Sleep Disorders

Concussion

This animation shows the head receiving two impacts. One on the front, and one on the side from a boxing glove.

• Headache
• Pain