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31 Cards in this Set

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between menxtrual bleeding & ovulation
pre-ovulatory period
occurs from day 6 to day 13 of 28 day cycle
pre-ovulatory period
follicular phase
pre-ovulatory period
proliferative phase
pre-ovulatory period
rising levels of FSH trigger development of several primary follicles in ovaries
pre-ovulatory period
most follicles undergo atresia but one eventually becomes a Graafian follicle
pre-ovulatory period
secretion of extradiol from granulosa cells developing follicles cause changes
pre-ovulatory period
stratum basalis produces new stratum functionalis
pre-ovulatory period
cervical mucus becomes thinner to facilitate passage of sperm through cervix
pre-ovulatory period
lining of vagina thickens & becomes more secretory
pre-ovulatory period
rising estradiol levels exert positive feedback on hypothalamus to continue GnRH release to stimulate anterior lobe of pituitary gland to release a surge of LH
pre-ovulatory period
occurs on day 14 of 28 day cycle
ovulation
LH surge causes Graafian follicle to rupture & release its secondary oocyte & polar body
ovulation
Remnants of Graafian follicle become corpus luteum which secretes progesterone
ovulation
between ovulation & onset of mentrual bleeding
post-ovulatory period
lasts from day 15 to day 28 of 28 day cycle
post-ovulatory period
luteal phase
post-ovulatory period
secretory phase
post-ovulatory period
rising levels of progesterone from corpus luteum exerts negative feedback on hypothalamus that inhibits secretions of GnRH
post-ovulatory period
absense of GnRH prevents pituitary gland from releasing FSH so no additional ovarian follicles can develop
post-ovulatory period
rising levels of progetserone stimulate development of endometrium making it thicker, spondier & more vascular
post-ovulatory period
uterine glands fill with glycogen in anticipation of fertilized egg
post-ovulatory period
if fertilized egg implants in endometrium, corpus luteum must be maintained to produce & secrete hormones needed to continue pregnancy
post-ovulatory period
if fertilizaton does not occur, corpus luteum degenerates
post-ovulatory period
levels of estradiol & progesterone decline sharply & trigger menstruation
post-ovulatory period
menses
menstruation
occurs from day 1 to day 5 of next 28 day cycle
menstruation
sharp decline in progesterone levels constricts blood vessels that supply endometrium & cause eschemia that leads to death of endometrial tissue
menstruation
stratum functionalis starts to slough off producing menstrual fluid containing blood clots, uterine fluid, vaginal cells & endometrial tissue
menstruation
sharp decline in progesterone levels removes negative feedback inhibition on hypothalamus
menstruation
prostaglandins trigger contractions of uterine smooth muscle thta may be responsible for cramps associated with menstruation
menstruation