13.5 Ovary Flashcards
what is the funcitonal unit of the ovary
follicle
what 3 cells are in the follice from center to outside
follicle in center, Granulosa cells outside that , Theca cells on outside
theca cells respond to what homo to produce what?
LH stimulates theca cells to produce Androgen
What hormone are grnaulosa cells stimulated by
FSH
what do granuloma cells convert (from what in to what)
they convert Androgen produced by theca cells into estradiol
what does estradiol do at normal levels in the ovary
drives proliferative phase of endometrial cycle
at very high levels, what does estradiol surge accomplish
it paradoxically feeds back to increase LH production –> LH surge
What does the LH surge accomplish? Marking what phase beginning
it leads to ovulation marking the beginning of the secretory phase
what happens to the follicle after ovulation
it becomes the corpus luteum
What does the corpus luteum secrete and why
it secretes progesterone to maintain the secretory phase (preparing the endometrium for pregnancy)
a hemorrhagic luteal cyst occurs when and how?
hemorrhage into the corpus lutem during early pregnancy usually
what causes follicular cysts?
degeneration of follicles
define polycystic ovarian disease
multiple ovarian follicular cysts dt homo imbalance
What specific hormone ratio is found in PCOD
LH:FSH >2
in PCOD what is the classic pt (4)
(female duh) obese infertile oligomennorhea hirsutism
