Weight machine exercises
Learning Center
Video: Knee extension with weight machine
The knee extension exercise targets the front of the thigh. See how it's done.
Video: How cancer spreads
Watch this video to see how cancer spreads (metastasizes).
Video: Heart and circulatory system
Watch this video to see how a healthy heart works.
Video: HSG test for female infertility
Video animation shows the HSG test — an X-ray study to identify causes of female infertility.
Video: Chest press with weight machine
The chest press exercise targets the chest muscles. See how it's done.
Video: Biceps curl with weight machine
The biceps curl builds strength in the upper arm. See how it's done.
Video: 3 things you didn't know about cold sores
Cold sores on the lips can be embarrassing and tough to hide. Most people who are infected with the virus that causes cold sores never develop symptoms.
Viagra for women: Does it exist?
Learn about medicines to treat problems with sexual arousal or sexual desire in women.
Vertebral tumor
Vertebral tumors grow in the bones of the spine, causing pain and weakening the spinal column. Read more about how they’re managed, and what to expect.
Vaginitis
Inflammation of the vagina can result in discharge, itching and pain. Recognize signs and symptoms and learn when to seek treatment.
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