Which of the following statements about estrogen in females is FALSE?
A)In low plasma concentration,estrogen inhibits pituitary secretion of LH and FSH.
B)In high plasma concentration,estrogen stimulates pituitary sensitivity to GnRH.
C)In the presence of high plasma concentration of progesterone,estrogen stimulates increased secretion of GnRH.
D)Estrogen secretion is required for the LH surge.
E)Estrogen stimulates follicular growth.

Question

Quizplus · Accepted Answer

In the presence of high plasma concentration of progesterone, estrogen actually inhibits the secretion of GnRH. This is because progesterone has a negative feedback effect on the hypothalamus and pituitary, and estrogen amplifies this effect. Therefore, statement C is false. The other statements are true.

Which of the Following Statements About Estrogen in Females Is