ESTROUS Flashcards

1
Q

top sign that the animal is in heat

A

receptivity

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2
Q

specific phase / period of receptivity / how many days

A

estrus / 9 days

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3
Q

the adjective to describe the whole cycle

A

estrous

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4
Q

happens in animals that are seasonally polyestrous animal / example of animal?

A

anestrus / sheep

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5
Q

The stage wherein the animal not in heat but have still ovarian activity

A

Diestrus

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6
Q

phase where there is vulvular hyperemia and cornified cells

A

proestrus

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7
Q

ovulation occurs in what phase? except in what animal?

A

estrus/cows
Ovulation occurs about 12 hours after the end of oestrus
Ovulate during metestrus

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8
Q

T/F: Ovulation is a spontaneous process in all domestic species

A

false: Except cat, rabbit and camelids
Ovulation is induced by the act of coitus

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9
Q

main hormone in estrus?

A

oestradiol

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10
Q

main hormone in follicular phase?

A

proestrus and estrus = progesterone

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11
Q

Stage of estrous cycle where the formulation of CL occurs

A

metestrus

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12
Q

what is the luteal phase and its main hormone

A

metestrus and diestrus; estrogen

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13
Q

prolonged priod of sexual rest

A

anestrus

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14
Q

phase that has fully functional CL and cervix becomes constricted and scant

A

diestrus

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15
Q

non functional CL, cervix is constricted and sec scant

A

anestrus

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16
Q

3 extrahypothalamic areas

A

cerebral cortex, thalamus and midbrain

17
Q

mares are seasonal breeder, and during winter anestrus

A

T

18
Q

ave length of equine estrous CYCLE and when does ovulation occurs?

A

20-23 days, ovul = penultimate or last day pf oestrus

19
Q

T/F: the mare exhibitis flehmen during oestrus

A

False. Stallion

20
Q

optimal time for ai in cow

A

4 to 12 hours after of onset of oestrus

21
Q

T/F: tail wagging is a sign of estrus in goat

A

F. sheep

22
Q

stationary and rigid attitude are signs of estrus in pigs

A

T

23
Q

T/F: there is immobilization reflex in sow

A

False - Goat

24
Q

T/F: in bitches, anestrus has no proven benefits

A

F

25
Q

Bitch is receptive to males as early as proestrus

A

= false only during estrus

26
Q

T/F: a decrease in LH stimulates ovulation and formation of CL

A

false. spike in LH

27
Q

arched back behavior indicating that a female will allow a male to mount her is called ____

A

lordosis

28
Q

hormone released from granulosa cells in ovarian follicles

A

estradiol

29
Q

glycoprotein hormone secreted by granulosa cells of growing follicles

A

inhibin. (also inhibibts FSH sec)

30
Q

released from CL and decreases GnRH release

A

progesterone

31
Q

diestrus peak hormone

A

LSH

32
Q

Vasectomized boars can ejaculate but no sperms

A

T