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