How cancer spreads

Cancer of the throat or larynx

From a top view of the voice box (larynx) and vocal cords, this animation shows the formation of a malignant tumor on the right vocal cord.

• Cancer

Squat with dumbbell exercise for leg muscles

The squat with dumbbells is an exercise that targets the leg muscles. See how it's done.

Heartburn and hiatal hernia

Watch this video to learn about heartburn and hiatal hernia.

Why does my child have allergies?

An animation that shows the allergic reactions children can have and demonstrates a rash on the skin.

Calf raise with dumbbell

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