Reproduction
Main Menu
When the corpus luteum dies and progesterone levels decrease, the hypothalamus will secrete GnRH and start the cycle all over again.
You've worked your way through one complete menstrual cycle.
Now you can put it all together in one flow chart by dragging the steps of the PREOVULATORY phase into position.
GnRH
anterior pituitary
negative feedback
FSH
LH
follicles mature and secrete estrogen
positive feedback
though negative feedback makes
FSH levels drop, follicles with the most FSH receptors grow
and secrete more estrogen.
continued high estrogen levels
When you're done, click the forward arrow on the right to go on, or the circular arrow to try this quiz again.