Question

select the correct answer.

while the ovum is on its way to the uterus, a successful mating results in the presence of sperm cells in the fallopian tube. one of these sperm cells fertilizes the ovum. how does this event affect the corpus luteum?

a. the corpus luteum signals the uterus to shed its endometrium.

b. the corpus luteum stops producing progesterone and degenerates.

c. the corpus luteum continues secreting progesterone, which helps support the embryo.

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Explanation:

To solve this, we analyze the role of the corpus luteum after fertilization. When fertilization occurs, the corpus luteum continues to secrete progesterone to maintain the endometrium and support the developing embryo. Option A is incorrect as shedding the endometrium (menstruation) happens without fertilization. Option B is incorrect because the corpus luteum does not stop producing progesterone immediately after fertilization; it continues (and later the placenta takes over, but initially the corpus luteum still functions). Option C correctly describes the corpus luteum's role post - fertilization.

Answer:

C. The corpus luteum continues secreting progesterone, which helps support the embryo.