Cerebral aneurysm

Concussion

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

• Headache
• Pain

Athetosis resulting from basal ganglia injury

This animation illustrates the location of basal ganglia in the brain. Injury to the basal ganglia may result in athetosis (constant writhing movements of the body).

• Injury
• Headache

Knee extension with weight machine

The knee extension exercise targets the front of the thigh. See how it's done.

Amoxicillin: Antibiotic Action and Appropriate Uses

A look at how amoxicillin works and which bacterial infections it can treat

• Amoxicillin

Abdominal crunch

The abdominal crunch is a classic core-strength exercise. See how it's done.