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

Question

Quizplus · Accepted Answer

The average ejaculate contains around 200-300 million spermatozoa, but due to losses during transport, a man must have at least 20 million spermatozoa per milliliter to be considered fertile. Anything below this amount is considered functionally sterile, meaning that it is unlikely that the spermatozoa will be able to fertilize an egg. Options A, B, and C are too low to provide enough fertile spermatozoa for successful fertilization. Option E is much higher than the minimum requirement for fertility.

Because of the Great Loss of Spermatozoa During the Process