Exam - Luteal Phase and Menstrual Cycle

Question 1

what is the major steroid produced in the luteal phase

Answer 1

P4

Question 2

towards the end of the a cycle, what are most luteal cells

Answer 2

the large tup

Question 3

what do large luteal cells do

Answer 3

contain oxytocin in cytoplasmic granules
produce large amounts of P4
acquire surface receptors for PGF2a beginning on day 5-6 post ovulation

Question 4

what is PGF2a

Answer 4

lutolytic during most of last 2/3 of C.L. life

Question 5

when is PGF 2a luteolytic in cows

Answer 5

day 5-18

Question 6

what is the development of the endometrium timed with

Answer 6

cyclic changes in estradiol and progesterone

Question 7

what are the 3 stages in the endometrium cycle

Answer 7

proliferation phase
secretory phase
menstrual phase

Question 8

proliferation phase of endometrium cycle

Answer 8

during follicular phase, estradiol stimulates growth of stratum functionalis

Question 9

secretory phase of endometrium cycle

Answer 9

during luteal phase, progesterone stimulates development of uterine gland

Question 10

menstrual phase of endometrium cycle

Answer 10

decrease in ovarian steroid induces the necrosis of stratum functionalis

Question 11

what is the endometrium divided into in the proliferative phase

Answer 11

2 layers - basal and functionale

Question 12

hormones from follicles

Answer 12

estradiol
ERa
progesterone

Question 13

when is estradiol released

Answer 13

follicular phase

Question 14

what does progesterone do during luteal phase

Answer 14

inhibits mitosis
stimulates mucus secretion from uterine glands
relaxes smooth muscles

Question 15

hormones from the uterus

Answer 15

prostaglandins
PGF2a

Question 16

what does PGF2a do

Answer 16

constricts uterine arterioles = anoxia

Question 17

what starts when endometrium is sloughed

Answer 17

menses

Question 18

what is PGF2a and PGE2 locally produced from

Answer 18

fatty acids