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Veterinary Reproduction (VEM 5111) > Review Questions (paraphrased) > Flashcards

Flashcards in Review Questions (paraphrased) Deck (22)
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1
Q

What is responsible for determination of gonadal male sex in mammals?

A

Sex-determining region on the Y xsome (Sry)

2
Q

What is the embryonic precursor of the uterus?

A

Paramesonephric duct (Müllerian duct)

3
Q

Chromosomal sex of Klinefelter’s syndrome?

A

XXY

4
Q

What structure prevents aspiration of fluid into the oviduct of the mare?

A

Oviductal papilla

5
Q

What accessory sex gland is present in males of all species?

A

Prostate

6
Q

What is the term for the 1st meiotic arrest of oogenesis?

A

Diplotene

7
Q

Are secondary spermatocytes haploid or diploid?

A

Haploid

8
Q

What is the role of ZP3 in fertilization process?

A

Binds w/ sperm to initiate acrosome reaction

9
Q

What is the mare placental type?

A

Diffuse, epitheliochorial, non-deciduate (side-note: also has microcotyledons)

10
Q

True/False: Bird egg binding occurs infrequently.

A

False: it’s actually a common problem

11
Q

True/False: During proestrus & estrus, the bitch is attractive to the male.

A

True

12
Q

Which animal is polyestrous, with repeated cycles throughout the entire year? A) dog B) sheep C) cow D) horse E) cat

A

C) cow

13
Q

What occurs in metestrus?

A

Progesterone rising during luteal formation

14
Q

What does melatonin do to mares?

A

Suppresses GnRH (they are long-day breeders)

15
Q

What does LH cause?

A

Ovulation (side note: also late follicular development)

16
Q

What causes vaginal cytology cornification?

A

Estrogen

17
Q

How long post-LH surge, is the bitch most fertile?

A

4-6 days

18
Q

What hormone is used for feline (and canine) pregnancy tests?

A

Relaxin

19
Q

When can feline puberty occur?

A

As early as 4-months-old

20
Q

What stage does feline ovulation occur?

A

Estrus

21
Q

What does FSH do (in females)?

A

Early follicular growth.

22
Q

What is the Ferguson Reflex?

A

Neuro-endocrine response driven by oxytocin (occurs during birth → uterine contractions) (excellent example of positive feedback loop)