Biological Sciences 26

Question 1

two cell types involved in estrogen production

Answer 1

theca cells

granulosa cells

Question 2

what do theca cells and granulosa cells have in common?

Answer 2

both have LDL and LH receptors

both can convert cholesterol to progesterone

Question 3

Only theca:

Answer 3

progesterone to androgens

must send androgens to granulosa

Question 4

only granulosa:

Answer 4

send progesterone to theca to convert to androgen

converts androgens to estrogens

FSH receptor

Question 5

role of FSH in estrogen production

Answer 5

binds to GRANULOSA cells to convert androgen to estrogen

Question 6

hypothalamic releasing hormone:

Answer 6

GnRH

Question 7

anterior pituitary sex hormones

Answer 7

FSH, LH

Question 8

ovarian hormones

Answer 8

estrogen, progesterone

Question 9

Levels on FSH, LH during childhood

Answer 9

almost absent

Question 10

days of ovarian cycle:

5-14

Answer 10

follicular growth

Question 11

days of ovarian cycle:

14

Answer 11

ovulation

Question 12

days of ovarian cycle:

14-23

Answer 12

development of corpus leuteum

Question 13

days of ovarian cycle:

24-28

Answer 13

regression of corpus leutuem

Question 14

days of uterine cycle:

1-5

Answer 14

menstruation

Question 15

days of uterine cycle:

4-14

Answer 15

proliferation

Question 16

days of uterine cycle:

14-28

Answer 16

secretion

Question 17

estradiol trends during menstrual cycle

Answer 17

low level

spikes but increase prior to ovulation

decrease sharply after ovulation

remain low until day 20 ad slight increase

Question 18

progesterone trends during menstrual cycle

Answer 18

starts low

bell curve peak 1 day after ovulation

levels decline

Question 19

FSH trends during menstrual cycle

Answer 19

start highest [ ]

sharp increase (2 fold) prior to ovulation

decrease during ovulation

Question 20

LH trends during menstrual cycle

Answer 20

sharpest increase one day before ovulation

Question 21

ovarian hormones

Answer 21

estrogen

progesterone

Question 22

what provides nourishment for ovum (primordial follicles)

Answer 22

granulosa cells

Question 23

granulosa cell function

Answer 23

provide nourishment for ovum

surround primordial follicle

secrete oocyte maturation inhibiting factor (stays in primordial state)