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Ross Therio > Reproductive Endocrinology > Flashcards

Reproductive Endocrinology Flashcards

1
Q

Where does Oxytocin come from?

A

Posterior pituitary

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2
Q

What is the biochemical classifications of FSH, LH, Inhibin?

A

Glycoproteins

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3
Q

What is the biochemical classification of Progesterone, Testosterone, & Estradiol?

A

Steroid

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4
Q

What is the biochemical classification of GnRH?

A

Peptide

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5
Q

What kind of receptors do Protein hormones(FSH, LH, Inhibin) bind to?

A

Plasma membrane bound receptors

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6
Q

What kind of hormones travel freely through plasma membrane into cytoplasm and binds directly to specific nuclear receptors?

A

Steroid horomones

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7
Q

Which species’s onset of puberty is influenced by pheromones?

A

Small ruminants & pigs

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8
Q

Period of sexual receptivity. Heat.

A

Estrus

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9
Q

What is the length of the bovine estrous cycle?

A

21 days

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10
Q

What species’s are polyestrus?

A

Cows
Swine
Rodents

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11
Q

What species’s are seasonally polyestrus and are short-day/fall breeders?

A

Sheep & goats

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12
Q

What species’s are seasonally polyestrus and are long-day/spring breeders?

A

Mares

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13
Q

What is the classification of a dogs estrous cycle?

A

Monestrus

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14
Q

What is the dominant hormone during the follicular phase?

A

Estrogen

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15
Q

What is the dominant ovarian structure during the follicular phase?

A

Follicles

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16
Q

What is the dominant ovarian structure during the luteal phase of the estrous cycle?

A

Corpus luteum

17
Q

What is the dominant hormone during the luteal phase of the estrous cycle?

A

Progesterone

18
Q

When does the follicular phase of the estrous cycle end?

A

Ovulation

19
Q

What 2 stages of the estrous cycle take place during the follicular phase?

A

Proestrus

Estrus

20
Q

What 2 stages of the estrous cycle take place during the luteal phase?

A

Metestrus

Diestrus

21
Q

Which of the 4 phases of estrous has the peak estrogen secretion? What species are the exception?

A

Estrus

Dog-happens during proestrus

22
Q

What signals the end of diestrus?

A

Luteolysis

23
Q

Which of the 4 phase of estrous has the peak progesterone level?

A

Diestrus

24
Q

Which hormone do we monitor to detect receptivity in the dog?

A

Progesterone

25
Q

How long does diestrus last in dogs?

A

2 months

26
Q

Which two species are induced ovulators?

A

Cat

Llama

Ross Therio (10 decks)

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