Blue Prints Ch 20 📘 Flashcards
During the follicular phase, the release of FSH from the pituitary gland results in development of a _________________.
primary ovarian follicle
The ovarian follicle produces ___________, which causes the uterine lining to proliferate.
estrogen
At mid cycle—approximately day _____ —there is an LH spike in response to a preceding estrogen surge, which stimulates ovulation, the release of the ovum from the follicle
14
After ovulation, the ___________ begins. The remnants of the follicle left behind in the ovary develop into the corpus luteum.
luteal phase
This corpus luteum is responsible for the secretion of _______________, which maintains the endometrial lining in preparation to receive a fertilized ovum.
progesterone
The withdrawal of estrogen and progesterone during the luteal phase of the prior cycle causes a gradual _____________ in FSH.
increase
In turn, FSH stimulates the growth of approximately 5 to 15 ____________________, initiating the follicular phase again.
primordial ovarian follicles
The __________ triggers the resumption of meiosis in the oocyte and induces production of progesterone and prostaglandins within the follicle.
LH surge
The ___________ and ____________, in turn, are responsible for the rupture of the follicular wall with release of the mature ovum or ovulation.
progesterone and prostaglandins
Fertilization of the ovum must occur within ___________ of ovulation or it degenerates.
24 hours
If fertilization occurs, the developing trophoblast synthesizes ________________________ —a glycoprotein very similar to LH—which maintains the corpus luteum, so that it can continue production of estrogen and progesterone to support the endometrium.
human chorionic gonadotropin (hCG)
During the FOLLICULAR PHASE, the endometrium is in the _______________, growing in response to estrogen.
proliferative phase
During the LUTEAL phase, the endometrium enters the ________________, as it matures and is prepared to support implantation.
secretory phase
The menopausal transition or perimenopause is the transition from normal ovulatory cycles to menopause because of _______________________.
progressive ovarian failure
_______________ formerly premature ovarian failure, is the onset of spontaneous menopause before the age of 40 years and requires further testing.
Primary ovarian insufficiency (POI)