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Author Question: Congenital absence of a testicle: a. Azoospermia b. Cryptorchism c. Aspermia d. Oligospermia ... (Read 45 times) |
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.