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MedOBGYN > ovarian menstrual cycle > Flashcards

ovarian menstrual cycle Flashcards

1
Q

process of endometrial tissue shedding with hemorrhage that is dependent on sex steroid hormone-directed changes in blood flow in spiral arteries

A

menstruation

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2
Q

average ovarian cycle

A

28 days

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3
Q

range of ovarian cycle

A

25-32 days

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4
Q

involved hormone from hypothalamus

A

GnRH

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5
Q

involved hormone from pituitary gland

A

FSH

LH

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6
Q

involved hormone from ovaries

A

estrogen

progesterone

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7
Q

most potent estrogen

A

17B estradial

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8
Q

estrogen is secreted by

A

granulosa cells of domiannt follicles

leteinized granulosa of CL

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9
Q

estrogen receptor in the eondometrium

A

REA

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10
Q

estrogen receptor in the gland s and stroma and blood vessels

A

ERB

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11
Q

sign of increase in progesterone

A

subnuclear vacuolation

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12
Q

amount of eggs in 20wks of life

A

6-7 million

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13
Q

amount of eggs @ birth

A

1-2 mill

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14
Q

amount of eggs @ puberty

A

300k

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15
Q

how many eggs released for ovulation

A

400-500

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16
Q

group of eggs that are the. ones to go onto the antral stage

A

cohort

17
Q

recuitment of follicles from resting pool

A

follicular phase

18
Q

onset of gonadotrophin surge

A

34-36hrs before ovulation

19
Q

peak of LH secretion

A

10-12hrs before ovulation

20
Q

phases of the ovarian cycle

A

follicular

luteal

21
Q

manifestation when follicles rupture

A

pain in hypogastric area

22
Q

formation of the corpus luteum

A

luteal phase

23
Q

ruptured follicles become

A

corpus luteum

24
Q

life span of the CL depends on

A

LH

hCG

25
Q

role of CL in pregnancy

A

continues production of progesterone

26
Q

fate of CL if no pregnancy

A

dies in 9-11 days after ovulation

27
Q

CL dies if no pregnancy because of

A

dec. LH

28
Q

regression of the CL leads to

A

menstruation

29
Q

phses of the endometrial cycle

A

proliferative

secretory

30
Q

what happens in day 5 proliferative phase

A

restoration and revasculatization of the endometrium

31
Q

how is the bleedong stopped during mens cycle

A

reepithelialization and angiogensis

32
Q

luteal or secretory phase is constant in duration _____

A

day 12-14 days

33
Q

first sign of ovulation, direct results of progesterone action

A

subnuc vacuolation

34
Q

window of implantation

A

day 20-24

35
Q

protrusion ofm the apical surface in to the lumen

A

pinopods

36
Q

role of pinopods

A

easier attachment of the blastocyst

37
Q

vasoconstrictions would lead to

A

ischemia

38
Q

layer that is shed

A

functionalis

39
Q

layer that is left for the endometrial growth

A

basalis

MedOBGYN (2 decks)

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