Semen is a mixture of sperm cells, which are produced by the testes, and the secretions of accessory glands, such as the prostate gland, seminal vesicles, and bulbourethral glands. These secretions provide nutrients for the sperm, help neutralize the acidity of the vaginal tract, and serve as a medium for the sperm to swim through.

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Semen Is

Question 28

Multiple Choice

Semen is

A) produced solely by the testis.
B) a vaginal secretion needed to activate sperm cells.
C) sperm cells plus the secretions of accessory glands.
D) responsible for engorgement of erectile tissue of the penis.
E) is composed only of sperm cells.

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