Menstrual Cycle Flashcards
site of hypothalamic-pituitary cycle
CNS and anterior pituitary area
trigger of hc-pituitary cycle
low estrogen and progesterone
organs involved in h-p cycle
hypothalamus and APG
phases in h-p cycle
follicular and luteal
what h-p cycle phase is the release of folllicle stimulating hormone with increased graffian follicles and estrogen
follicular phase (day 1-12/13)
what h-p cycle phase is the release of luteinizing hormone that causes increased progesterone
luteal phase (day 13-28)
site of ovarian cycle
adnexa (internal reproductive part)
trigger of ovarian cycle
low levels of estrogen and progesterone;
recession of the corpus luteum
3 organs involved in ovarian cycle
ovaries
fallopian tube
uterus
3 phases in ovarian cycle
pre-ovulatory
ovulatory
post-ovulatory
what phase in ovarian cycle:
1-30 immature graafian follicles start to mature due to FSH and estrogen
pre-ovulatory (day 1-12/13)
what phase in ovarian cycle:
surge of LH influences one or more than one ovum to be released
ovulatory (day 14)
what day does ovulation occur
day 14
what phase in ovarian cycle:
decreased estrogen, LH continues to stimulate empty follicle (corpus luteum) to produce progesterone
post-ovulatory ( day 14-28)
site of endometrial cycle
endometrium
trigger of endometrial cycle
low estrogen and progesterone
organ involved in the endometrial cycle
uterus
phases in endo cycle
menstrual
proliferative
secretory
ischemic
what phase in endo cycle:
shedding of 2/3 of endometrium
menstrual (day 1-3/5)
what phase in endo cycle:
increased levels of estrogen, thickening of endometrium
proliferative (day 4-6/14)
what phase in endo cycle:
largen amt of progesterone is produced
edematous, vascular, functional endometrium becomes apparent
secretory (day 15-day 25)
what phase in endo cycle:
rapid decrease in progesterone and estrogen
spiral arteries goes spasm
blood supply to functional endometrium is blocked, ischemia occurs, bleeding follows
ischemic (day 26-28)
average length of menstrual cycle
28 days
average duration
5 days
average blood loss
50 mL
term used for first menstruation
menarche
average age of menarche
12-13 years
early menarche age
before age 12
late menarche age
after 18
complete menstrual history
menarche duration of menses interval of menses date of onset of last menstrual period date of past/prev menstrual period
decline of ovarian function four years preceding cessation of menstruation
perimenopause
natural cessation of menstruation
menopause
average age of menopause
35-60 years old