Because of the great loss of spermatozoa during the process of traveling from the vagina to the ampulla of the uterine tube where fertilization occurs, a male must have at least ________ spermatozoa per milliliter, or he will be functionally sterile.

A) 2,000,000
B) 100,000
C) 500,000,000
D) 20,000,000
E) 10,000


D) 20,000,000

Anatomy & Physiology

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a) A b) B c) C d) D e) E

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A.   1 B.   2 C.   3 D.   4 E.   5

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