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Flashcards in The Menstrual Cycle Deck (23):
1

Typical menstrual cycles last __-__ days and bleeding lasts __ days or less

24-35; 8

2

The first, more variable phase of the cycle is the ____ phase (ovaries) or the ___ phase (uterus)

follicular; proliferative

3

The second, more fixed phase is the ___ phase (ovaries) or the ___ phase (uterus)

luteal; secretory

4

The hypothalamus releases ___ hormone, which goes directly to the anterior pituitary through the hypophyseal artery due to its short ___ ___

GnRH; half life

5

The hypothalamus releases ___ hormone, which goes directly to the anterior pituitary through the pituitary portal system due to its short ___ ___

GnRH; half life

6

The follicular phase release of GnRH is __ amplitude and __ frequency versus the luteal phase where its ___ amplitude and ___ frequency

low; high; high; low

7

The anterior pituitary secretes both __ and __ for the cycle

FSH; LH

8

___ uses the __ receptor due to their similarity and the fact they're both made by the anterior pituitary

hCG; LH

9

Follicles won't progress past the __ phase without ___

antral; FSH

10

FSH stimulates ___ ___ proliferation

granulosa cell

11

FSH stimulates the ____ enzyme, which stimulates ___ to ___

aromatase; androgens; estradiol

12

FSH increases __ and ___ receptors to prepare for the next step

FSH; LH

13

Estradiol peaks __ day before ovulation

one

14

Initially, estradiol __ LH, but once it reaches a certain threshold, it switches to ____ LH

inhibits; stimulates

15

LH causes release of the ____ from the follicle __ hours after its surge

oocyte; 36

16

LH causes __ of the granulosa cells, which increases production of ____

luteinization; progesterone

17

LH causes resumption of ___ in the oocyte from ____ I to ____ II and release of a __ ___

meiosis; prophase; metaphase; polar body

18

Estrogen promotes ___ of the endometrium and there are prominent ____ on path

proliferation; mitosis

19

Progesterone promotes ___ of the glands and vessels, limits ____, and secretes ___ into the cavity

tortuosity; cell growth; glycoproteins and peptides

20

For menstruation to occur, the __ __ degenerates, you lose ___ and ___, ___ rises, and the lining of the uterus sloughs off

corpus luteum; estrogen and progesterone, FSH

21

A fertilized embryo releases ___, which maintains the __ __, which continues to release ___ and ___, which causes missed periods

hCG; corpus luteum; estrogen and progesterone

22

__ is the level where estrogen changes from inhibitory to excitatory

200

23

Inhibin is made by the ____ cells and ___ FSH

granulosa; inhibits;