Flashcards in endocrinology Deck (35)
avg duration of female monthly cycle
endometrial proliferation takes place during follicular or luteal phase?
follicular phase is followed by____, luteal phase is followed by_____
when does the corpus luteum form?
GnRH is released in what sort of manner?
there is a pulsatile release of LH every____
FSH rises ________
early in follicular phase
peak concentrations of steroids occur when?
right before ovulation
where are inhibin A & B synthesized?
granulosa cells of ovary
inhibin A is secreted from____, Inhibin B is secreted from____
corpus luteum; granulosa cells
inhibin B regulates ant pit to decr secretion of_____
follicular phase is associated with_____synthesis
during the follicular phase, proliferation of the uterin endometrium is regulated by?
what induces ovulation?
the surge of FSH & LH at day 14
what hormone is absoultely req'd for ovulation?
what is a temporary endocrine gland?
when does the corpus luteum reach a mature state?
7-8 days following ovulation
what is the regulatory hormone of steroid synthesis in luteal phase?
what is the regulatory hormone of steroid synthesis in follicular phase?
LH & FSH
differentiation of the uterine endometrium is regulated by?
what exerts negative feedback at the end of the luteal pahse?
2. inhibin A
break down of the zona pellucida
trophoblastic cells of the blastocyst makes contact with endometrium
trophoblasts differentiates into (2)
what cell types sends out protrusions and invades the endometrium
what stimualtes ovarian steroidogenesis for 1st 8 weeks after implantation?
when does hcg production peak?
think of what hormone for growth, development, metabolism of fetus?
what happens to hpl over the course of pregnancy?
_______produce both Hcg and hpl
hpl starts getting secreted at ______
CRH is produced by _____and____
syncytiotrophoblasts and trophoblasts
what hormone induces the onset of labor and PG production?
what hormone inhibs PG production and suppresses uterine contraction?
progesteron and 17-OH progesterone