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Endocrine (updated 2016) > Da lady bits > Flashcards

Flashcards in Da lady bits Deck (32):
1

What is the germinal epithelium

covers surface of ovary

2

What is the ovarian cortex

Ovarian follicles and stormal cells

3

What is the ovarian medulla

blood vessels, lymph, nerves

4

When do you start to form the egg cells in the ovary

prenatal

5

What do the ovarian follicles do

Secrete estrogens

6

What does the corpus lutem do

Produces progesterones, inhibins, estrogen, and relaxin

7

What is the earliest stage of follicular development

primordial follicle

8

What happens when the primordial follicles develop into primary follicles

Primary oocyte surrounded by granulosa cells
Zona pellucida forms
Stromal cells organize into thecal layer

9

What happens when primary follicles develop into secondary

granulosa cells excrete follicular fluid
Theca splits into theca interna and externa

10

What does LH act on

thecal cells
Cells produce testosterone from cholesterol

11

What does FSH act on

Granulosa cells
Takes testosterone and converts it to estradiol

12

What does estrogen normally do to LH and GnRH levels

Inhibit

13

What happens when estrogen levels rise during ovulation

estrogen becomes stimulatory to LH and GnRH
Leads to LH surge

14

What is the corpus luteum

If oocyte is not fertilized, corpus luteum is transitory

15

What does the corpus luteum become if the oocyte is not fertilized

Corpus albicans

16

What happens to hormone levels if oocyte is not fertilized

GnRH, FSH, LH rise due to loss of negative feedback

17

What does GnRH do

Secreted by hypothalmus
Regulate LH and FSH

18

What does FSH do

Initiate follicular growht
Stimulate ovarian follicles to secrete estrogens

19

What does LH do

Stimulate: further development of ovarian follicles-secretion of estrogen
Trigger ovulation
Formation of corpus luteum

20

What does estrogens do

maintenance of repro structures
inhibits GnRH, LH, FSH
Bone builiding

21

What does progesterone do

secreted by corpus luteum
prepare and maintain milk production
Inhibits actions of estrogen
Inhibits secretion of GnRH and LH

22

What do uterine tubes do

Provide route for sperm
Target for hormones

23

What does estrogen do to oviduct

Influence cilia* beat

24

What does estrogen do to the uterus

stimulates epithelial proliferation

25

What does progesterone do to the uterus

Inhibits estrogen-stimulated epithelial proliferation
Stimulates glandular secretion

26

What hormones influence mammary gland fucntion

Prolactin
Oxytocin

27

Where is relaxin produced

Corpus luteum

28

What does relaxin do

Relax uterus- inhibits contraction of myometrium

29

Where is inhibin secreted from

granulosa cells of growing follicles and corpus luteum

30

What does inhibin do

Inhibits secretion of FSH and LH

31

What does oxytocin do during birth

cause myometrial contraction
shoots out da baby
short-half life

32

What do ovaries produce

Gametes
Hormones