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Health Library

Sunburn (Sun Poisoning)

Most sunburns are minor and go away in a few days. But sunburns can be serious. It's important to know when to get medical care.

Health Library

How the Eye Works

Sharp vision depends on many factors. The parts of the eye work together to bend (refract) and focus light rays.

Health Library

Leg and Knee Exercises: Heel Raise

Learn how to do a heel raise to help strengthen your knee and calf.

Health Library

Seated Hamstring Stretch

Hamstring stretches help stretch your legs for greater flexibility.

Health Library

Lower Body Exercises- Thigh (Quad) Stretch

Quad stretch to help stretch your lower body and help your back.

Health Library

Tuberculosis Testing

TB can cause serious health problems. To protect your health, get tested.

Health Library

Parts of the Mouth

Your mouth allows you to speak, breathe, and chew. This article shows specific parts of the mouth, with a helpful diagram.

Health Library

Parts of the Throat and Neck

Here are details and images of different parts of the throat and neck.

Health Library

Understanding Your Sinuses

Your sinuses are air-filled spaces between the bones in your head. The sinuses make mucus that drains into the nose. This helps keep the nose moist and free of dust and germs.

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