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A vasectomy is surgery to make a man sterile (permanently unable to father a child). During a vasectomy, the tube that carries

A vasovagal reaction (also called vasovagal syncope) is sudden dizziness or fainting that can be triggered by pain, fright, or

A vegan is a person who eats only fruits, grains, nuts, seeds, vegetables, and plant products and consumes no animal or dairy

Venous insufficiency occurs when the veins in the legs do not return blood to the heart and upper body normally. Causes include

The ventricles are the two lower chambers of the heart, one on the right and one on the left. The ventricles receive blood from

Vertebrae are the bones that make up the spine, or backbone. A person usually has 33 vertebrae aligned in a column, with one on

Vertigo is a feeling that you or your surroundings are moving when there is no actual movement. You may feel as though you are

The vagina is part of the female reproductive tract. It extends from the uterus to outside the body. The opening to the vagina is

The vulva is the genital area outside the body that surrounds the opening of the vagina and urethra. It also includes the small

Viral (or aseptic) hepatitis is liver inflammation caused by infection with a virus. Common symptoms of hepatitis are pain below