additional

Question 1

when does LH peak

Answer 1

before ovulation

Question 2

when does FSH peak

Answer 2

diestrus if nagovulate
if not nagovulate - right after ovulation

Question 3

when does P4 peak

Answer 3

right after ovulation

Question 4

progesterone will remain high until CL is destroyed

Answer 4

true

Question 5

estradiol has an exponential increase when?

Answer 5

it is near ovulation

Question 6

when does estradiol decrease?

Answer 6

after ovulation

Question 7

__ and__ are luteotrophic unlike PGF2a

Answer 7

P4 and E2

Question 8

in Maternal recognition of pregnancy the developing embryo should signal that the dam is pregnant to stop the estrous cycle
and the concentration of prostaglandin in maternal blood must be sustained

t/f

Answer 8

false. progesterone

Question 9

suppresses pulsatile prostaglandin secretion
in goats

Answer 9

Caprine trophoblast protein (cTP-1)/ caprine tau interferon (oIFN- tau)

Question 10

migration of conceptus in mares happen at days 9-16 T/F

Answer 10

true

Question 11

why is maternal recognition important?

Answer 11

to retain CL

Question 12

why is there no need for maternal recognition in dogs and cats

Answer 12

CL life > gestation phase

Question 13

transrectal palpation for pregnancy diagnosis can also be done in pigs T/F

Answer 13

true

Question 14

estrogen production by the conceptus alter the transport of PGF2a in pigs T/F

Answer 14

true

Question 15

tx to anestrus sheep to restore reproductive function

Answer 15

kisspeptin

Question 16

heifers can be bred at an earlier stage if it has a large scrotal circumference

Answer 16

true

Question 17

light manipulation is effective in what species

Answer 17

• Mare, ewe, goat, cats (feral)

Question 18

Providing one eye with blue light is enough to inhibit melatonin production T/F

Answer 18

true

Question 19

• Common reproductive phenomena in cattle

Answer 19

subestrus or silent heat

Question 20

kisspeptin can also be given in mares, mice, huamns

Answer 20

true

Question 21

Prostaglandin should be administered of AFTER progesterone withdrawal (cows) T/F

Answer 21

at the time

Question 22

-GnRH or hCG administration shortly BEFORE progesterone withdrawal (mare, cow, ewe)

Answer 22

After

Question 23

T/F kisspeptin increases during breeding season

Answer 23

true

Question 24

synthetic GnRH are effective only to animals close to puberty

Answer 24

true

Question 25

GnRH in mares should be given BEFORE vernal transition

Answer 25

AFTER

Question 26

what hormones do deslorelin inhibits when administered for prolonged periods

Answer 26

FSH, LH

Question 27

placed in vulva to continuously produce progesterone

Answer 27

eCG thru - Controlled internal drug release (CIDR)

Question 28

accumulation of fluids in abdomen, barrel shaped abdomen

Answer 28

dropsy

Question 29

inhibin is produced by __ in females and___ in males

Answer 29

granulosa cells sertoli cells in testis

Question 30

these 2 act together to suppress FSH secretion.

Answer 30

Inhibin and oestradiol

Question 31

t/f Tonic release of gonadotrophins, especially LH, does not occur at a steady rate but in a pulsatile fashion in response to a similar release of GnRH from the hypothalamus

Answer 31

true

Question 32

Antral follicles are also known as tertiary follicles or

Answer 32

graafian follicles

Question 33

the process whereby one or more of the recruited follicles are selected to develop further

Answer 33

selection

Question 34

he mechanism whereby one (the dominant fol- licle) or several codominant follicles undergo further maturation in an environment in which the growth and development of other antral follicles is suppressed

Answer 34

dominance

Question 35

gonadotrophin stimulation of a cohort of rapidly growing antral follicles

Answer 35

recruitment

Question 36

3 accepted descriptions of folliculogenesis

Answer 36

recruitment, selection, dominance

Question 37

The dominant follicle secretes inhibin and oestradiol that feedbacks on the hypothalamus–pituitary axis to reduce circulatory FSH concentrations. Thus any antral follicle that is still FSH-dependent will regress and undergo atresia. T/F

Answer 37

true

Question 38

The dominant follicle will further develop and can remain dominant for several days. It will undergo its final maturation and ovulate if progesterone concentrations increase T/F

Answer 38

not increase. DECLINE

Question 39

____ is suppressive to LH secretin enabling increase in FSH

Answer 39

progesterone

Question 40

plays a critically important role in the inhibition of the tonic mode of LH secretion

Answer 40

p4

Question 41

t/f only FSH can induce early antral follicular growth

Answer 41

true

Question 42

CL is rapidly formed from the____ follicle after ovulation,

Answer 42

Graafian

Question 43

The hormones that are most likely to be involved in stimulating CL formation and maintenance

Answer 43

LH prolactin

Question 44

prolactin plays a critical role in maintaining the CL in rodents and the dog T/F

Answer 44

true

Question 45

2 components of luteal regresion

Answer 45

functional and structural regressio

Question 46

current evidence indicates that leptin is likely to exert its effects on LH secretion by modulating ____

Answer 46

kisspeptin