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MCAT Question A Day - 7/7/14 - Answer!

During the female menstrual cycle, increasing levels of estrogen cause:

A.  a positive feedback response, stimulating LH secretion by the anterior pituitary.
B.  a positive feedback response, stimulating FSH secretioby the anterior pituitary.
C.  a negative feedback response, stimulating a sloughingoff of the uterine lining.
D.  a negative feedback response, stimulating decreaseprogesterone secretion by the anterior pituitary.

A is correct. Increased secretion of estrogen sets off the luteal surge, which involves increased secretion of LH and leads to ovulation.