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THE MALE SEX GLANDS
The sex glands, or gonads
The gonads—from the Creek word gonos, meaning seed—consist of the testicles in men and the ovaries in women. Besides producing sperm and egg cells, the sex glands make the hormones that are responsible for the special characteristics of the male and female.
The male sex glands
The male sex glands consist of two testicles that lie enclosed in the scrotal sac of skin, just below the penis. They secrete semen containing the male element of reproduction, the sperm, and also the very important male sex hormone testosterone.
In addition to affecting the male sex organs and sex characteristics, testosterone stimulates muscle and bone development and helps to maintain the strength of muscles.
Impotence, or the inability to have sexual relations, can occur if the testicles are removed, or it may result from a disease of the testicles or the pituitary gland. Frequently, however, impotence is due to emotional troubles, or psychoneuroses.
Sterility means the inability to have children. It occurs in some men who are by no means impotent.
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