Biceps curl with weight machine

Calf raise with dumbbell

The calf raise targets the calf muscles in the legs. See how it's done.

Hamstring curl with resistance tubing

The hamstring curl with resistance tubing targets the back of the thigh. See how it's done.

Endoscopy

Endoscopy allows your doctor to view your esophagus, stomach and part of your duodenum.

Intuniv (guanfacine): Introduction and ADHD Overview

An overview of childhood Attention Deficit Disorder Hyperactivity (ADHD) and the non-stimulant treatment Intuniv (guanfacine).

• Intuniv
• ADHD

Retina

This animation shows the process in which light is transformed by the retina as electrical impulses that travel to the brain through the optic nerve.

• Vision