Female Menstrual Cycle (Step Questions) Flashcards
Low levels of estrogen and progesterone trigger the hypothalamus to release GnRH
Menstrual
GnRH causes the pituitary to release FSH
Menstrual
FSH causes a follicle to mature/develop in the ovary
Menstrual
The developing follicle releases estrogen
Menstrual
Rising estrogen levels cause the endometrium to thicken due to cell division
Follicular
The rising estrogen levels suppress the release of FSH through negative feedback
Follicular
High levels of estrogen cause a significant spike in LH to release by the APG
Follicular
The spike in LH causes the follicle to rupture and release the mature ovum (ovulation Day 14)
Follicular
The empty follicle becomes a corpus luteum under the influence of LH
Luteal
The corpus luteum releases progesterone
Luteal
Rising levels of progesterone cause the lining of the endometrium to become secretory and continue to thicken
Luteal
Rising levels of progesterone and estrogen inhibit the release of GnRH
Luteal
The drop in GnRH causes LH and FSH levels to drop
Premenstrual
The inhibition of FSH and LH causes the corpus luteum to degrade
Premenstrual
The degradation of the corpus luteum causes the release of estrogen and progesterone to decrease
Premenstrual