What does the ovarian cycle image above illustrate?
A)The peak of luteinizing hormone occurs slightly before mid-cycle.
B)Ovulation occurs well before mid-cycle.
C)The level of luteinizing hormone does not change much during the cycle.
D)The level of progesterone spikes just before mid-cycle.

Question

Quizplus · Accepted Answer

The ovarian cycle image shows that the peak of luteinizing hormone (LH) occurs slightly before mid-cycle, around day 14. LH surge triggers ovulation, which occurs around 24-36 hours after the peak of LH. Therefore, ovulation occurs near mid-cycle, but not well before mid-cycle. The level of LH increases dramatically during the mid-cycle, which stimulates the release of the matured egg from the ovary. The level of progesterone spikes after ovulation and during the luteal phase, which occurs after mid-cycle. Therefore, options B, C, and D are incorrect.

What Does the Ovarian Cycle Image Above Illustrate