When is the secretion of progesterone at a low level?
A) menstrual phase
B) proliferative phase
C) secretory, or progestational, phase
D) menstrual and proliferative phase
E) proliferative phase and secretory, or progestational, phase

Question

Quizplus · Accepted Answer

Progesterone levels are low during the menstrual and proliferative phases. It rises during the secretory phase after ovulation.

When Is the Secretion of Progesterone at a Low Level