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Animal Reproduction > MCQ 1 > Flashcards

MCQ 1 Flashcards

1
Q

Primary reproductive organ of the female?

A

Ovary

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2
Q

Corpus Albicans

A

The regressed Corpus Luteum

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3
Q

Going from the outside to the inside of the female reproductive system, which of the following is correct?

A

Vulva, Cervix, Oviduct and Ovary

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4
Q

In which of the following species does ovulation occur at only one place on the surface of the ovary

A

Mare

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5
Q

Who first identified spermatozoa with the microscope?

A

Van Leeuwenhoek

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6
Q

The pampiniform plexus is involved in temperature regulation of the testes and is located where?

A

Spermatic Chord

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7
Q

Which of the following is involved in sperm storage in the male?

A

Caudal tail and Epididymis

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8
Q

Which of the following endocrine glands are located in the head?

A

Pineal, Anterior Pituitary and Hypothalamus
(All of the above)

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9
Q

Puberty occurs at 6-7 months of age in?

A

Gilts

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10
Q

Seasonally polyoestrus

A

Ovine and Equine

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11
Q

Oestrus cycles throughout the year?

A

Bovine and Porcine

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12
Q

Fluid-filled follicles visible on the surface of the ovary are described as?

A

Tertiary Follicles

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13
Q

The acrosome is not?

A

Part of the sperm mid-piece

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14
Q

Sperm motility is driven by mitochondria in the?

A

Mid-piece

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15
Q

Vandenbergh Effect

A

Refers to the advancement of the onset of puberty following exposure to a male

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16
Q

Function of the uterus is to cause luteolysis?

A

True

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17
Q

A useful measure of puberty in a bull is the age at which there are sufficient sperm present in the ejaculate to successfully breed females?

A

True

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18
Q

At the time fertilisation, both the oocyte and the sperm are hybrid?

A

True

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19
Q

The pampiniform plexus compromises of arteries, veins and serves to warmth the testes

A

False

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20
Q

Seminiferous tubules are the site of testosterone production in the male?

A

False

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21
Q

The sow is a spontaneous ovulatory while the cat is an induced ovulatory?

A

True

22
Q

The CL -> After the ovulation of the dominant follicle

A

True

23
Q

The seminal vesicles are the site of spermatogenesis (Sperm Production) in the males?

A

False

24
Q

Freemartin

A

A sterile heifer born twin to a male

25
Q

Vasectomised animals -> Teasers to detect oestrus because?

A

They have normal levels of testosterone, normal libido and cannot get females pregnant
(All of the above)

26
Q

The sex of the offspring is determined by?

A

The sperm

27
Q

The most important function of the epididymis is?

A

Sperm maturation

28
Q

The volume of a typical ejaculate in the boar is?

A

200-250ml

29
Q

Glycerol is induced during semen processing to?

A

Prevent ice crystal formation during cryopreservation

30
Q

Traditionally, most genetic gain in cattle comes from the selection of superior males because?

A

Males produce millions of gametes per ejaculation

31
Q

Castration in the bull typically involves?

A

Cutting the blood supply to the testes with a consequence reduction in libido

32
Q

The spermatic chord in order

A

Van Deferens, vasculature, cremaster muscle and pampiniform plexus

33
Q

In the male FSH stimulates?

A

Spermatogenesis

34
Q

Daily sperm production I farm animals is approximately?

A

15-30 X 109 sperm per gram of testis

35
Q

During each oestrus cycle cows typically have?

A

2-3 waves of follicular growth

36
Q

A signalling pheromone?

A

Has a direct effect on the behaviour of the recipient animal

37
Q

The Whitten Effect in mice?

A

Refers to a tendency to shorten and synchronise oestrus cycles in females induced by the introduction of a male, is caused by androgens in male urine and is similar to the ram effect in sheep.
(ALL OF THE ABOVE)

38
Q

The duration of spermatogenesis is?

A

Months

39
Q
  1. In rams the difference between body and testicular temperature is approximately?
A

4’ degrees

40
Q

Sertoli Cells are contained in the?

A

Seminiferous tubules

41
Q

The main reason why collecting semen using an artificial vagina is preferable to using an electro-ejaculate is because?

A

You get a better sample

42
Q

Function of the Leydig Cells is to?

A

Produce androgens

43
Q

An average ejaculate in the bull contains?

A

10 billion spermatozoa

44
Q

The typical number of sperm used in bovine AI with frozen-thawed semen is?

A

20 million

45
Q

If a boar is given fence line access to a group of gilts, this will cause the age of puberty to be decreased compared to non-exposed gilts?

A

True

46
Q

Spermatogenesis includes the 3 main phases of spermatocytogenesis, meiosis and spermatogenesis?

A

True

47
Q

Best fertility is achieved if a cow is inseminated at the start of behavioural oestrus?

A

False

48
Q

The CL produces Oestradiol which is responsible for maintenance of pregnancy?

A

False

49
Q

Prostaglandin F2 Alpha is the main luteolytic factor and is produced by?

A

The uterus

50
Q

Progesterone (P4) and Prostaglandin F2 Alpha have similar actions during reproduction?

A

False

Animal Reproduction (17 decks)

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