Select the correct statement about fertilization.
A) If estrogen is present, the pathway through the cervical opening is blocked from sperm entry.
B) Both spermatozoa and the ovulated secondary oocyte remain viable for about 72 hours in the female reproductive tract.
C) Once inside the uterus, most sperm cells are protected and remain viable.
D) Millions of sperm cells are destroyed by the vagina's acidic environment.

Question

Quizplus · Accepted Answer

Millions of sperm cells are indeed destroyed by the acidic environment of the vagina shortly after ejaculation. This is a natural defense mechanism of the female reproductive system to regulate the number of sperm that reach the ovum for potential fertilization.

Select the Correct Statement About Fertilization