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Mammalian Reproduction > TPS 4 and 5 Quiz 2 > Flashcards

TPS 4 and 5 Quiz 2 Flashcards

1
Q

What prevents E2 from entering the fetal brain?

A

Alpha-fetoprotein

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2
Q

Which is NOT a definition of puberty in the female?

a. age at first ovulation
b. age at which female can support pregnancy without deleterious effects
c. age at which she reaches a threshold of fatness
d. age at first estrus/menses

A

c. age at which she reaches a threshold of fatness

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3
Q

What hormone is responsible for inhibiting kisspeptin before the onset of puberty?

A

Estrogen

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4
Q

What is the correct order of the stages of the estrous cycle?

A

Estrus, metestrus, diestrus, proestrus

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5
Q

T or F. In humans the follicular phase represents 20% of the menstrual cycle and the luteal phase represents 80% of the menstrual cycle.

A

False (50/50)

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6
Q

The most important factor preventing the LH surge is:

a. FSH and LH are too low to stimulate follicles
b. estrogen too low to stimulate the surge center
c. all of these
d. follicules are not stimulated to secrete estrogen

A

c. all of these

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7
Q

The two hormones that are responsible for threshold estrogen secretion are?

A

FSH and LH

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8
Q

Alpha-fetoprotein is biochemically classified as a ____ and is synthesized by the fetal ____

A

glycoprotein, liver

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9
Q

How does the surge center develop full neural activity for puberty in the female?

a. loss of negative feedback sensitivity of GnRH neurons to E2
b. none of these
c. loss of positive feedback sensitivity of kisspeptin neurons to E2
d. increase of positive feedback sensitivity of GnRH neurons to T4

A

b. none of these

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10
Q

T or F. Horses are induced ovulators

A

False, spontaneous

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11
Q

T or F. the dog is a seasonal polyestrus species

A

False

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12
Q

Which is typically the shortest stage of estrous?

A

estrus

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13
Q

Which best describes metestrus?

A

formation of a CL from the ovulatory follicle

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14
Q

Women have a _____ phase and ____ phase during a mentrual cycle

a. none of these
b. proliferative, secretory
c. follicular, luteal
d. all of theses

A

d. all of these

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15
Q

The unique phase of estrous in a non-mated queen is?

A

postestrus

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16
Q

T or F. Lactational anestrus is caused alone by the suckling stimulation of a calf.

A

False, multiple factors (sight, smell, touch, or calf, etc.)

17
Q

T or F. Gestation is 2 months in the queen

A

True

18
Q

Which species exhibits lactational anestrus?

A

Queen???

19
Q

What is the role of melatonin in short day breeders?

A

Shorter days results in high melatonin release that is less stimulatory to RFRP neurons, decreasing RFRP-3, removing inhibition of kisspeptin neurons, stimulating GnRH release to induce cyclicity

20
Q

Match the terms: Theca interna cells have

A

LH receptors

21
Q

Match the terms: granulosa cells have

A

FSH receptors

22
Q

Match the terms: FSH receptors causes

A

aromatase activation to convert T4 to E2

23
Q

Match the terms: inhibin causes

A

inhibition of FSH

24
Q

Match the stages, hormones, and roles in the estrous cycle below: dictates gonadotropins

A

FSH and LH

25
Q

Match the stages, hormones, and roles in the estrous cycle below: peak progesterone

A

diestrus

26
Q

Match the stages, hormones, and roles in the estrous cycle below: peak estrogen

A

estrus

27
Q

Match the stages, hormones, and roles in the estrous cycle below: luteolysis

A

metestrus

28
Q

Match the folliculogenesis terms below: recruited emergent follicles are

A

lack of

29
Q

Match the folliculogenesis terms below: selected and dominant follicles are

A

???

30
Q

Match the folliculogenesis terms below: atresia in most follicles is caused by

A

anestrus???

31
Q

Match the folliculogenesis terms below: menopause definition

A

lack of cyclicity

32
Q

Which are required for ovulation?

a. none of these
b. all of theses
c. increase of follicular pressure
d. weakening of the follicular wall
e. a peak of LH

A

b. all of these

Mammalian Reproduction (10 decks)

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