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Animal Science Lab P1 > Lab P2: Reproduction > Flashcards

Lab P2: Reproduction Flashcards

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1
Q

the ovary is always surrounded by the anterior portion of the ____ and
the ____ always is between the ________ and the _______

A

oviduct, ovary and the uterus.

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2
Q

Describe the ovaries on a horse.

A

Shaped like a kidney,
ovulation fossa in
center, no external
ovarian structures

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3
Q

Describe the ovaries on a Pig

A

Shaped like a bunch of
grapes, numerous CLs
and/or CAs if mature

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4
Q

Describe the ovaries on a Cow

A

Oval like an egg, CL
protrude prominently
above surface

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5
Q

Describe the ovaries on sheep and goats.

A

Identical to that found
in cows but much
smaller, usually have
multiple CLs / CAs

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6
Q

Describe the Uterus on a horse

A

large body with short
horns

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7
Q

Describe the Uterus on a pig

A

Large, long horns
with short body

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8
Q

Describe the Uterus on a cow

A

Large body with short
horns

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9
Q

Describe the Uterus on a sheep or goat

A

Predominant body
with slightly longer
horns than found in
cows

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10
Q

Describe the penis of a Horse

A

Large diameter with
“mushroom-like”
head

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11
Q

Describe the penis of a Pig

A

Spiral tip with
counterclockwise
rotation

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12
Q

Describe the penis of a Bull

A

Long, slender with
tapered end

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13
Q

Describe the penis of a Ram or goat

A

Thin projection from
the tip of penis.

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14
Q

_____ are fluid-filled circles that
resemble “_______”.

A

Follicles, Blisters.

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15
Q

What color are CLs in sows?

A

Red, pink, or gray.

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16
Q

What color are CLs in cows?

A

Yellow, orange, or grey.

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17
Q

CAs look like what?

A

Small, avascular structures that are white.

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18
Q

Full name for CLs?

A

Corpora Lutea

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19
Q

Full name for CAs?

A

Corpora albicantia.

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20
Q

Explain how follicles work?

A

They contain ova

-They either grow and ovulate or die.

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21
Q

Explain how CL’s develop.

A

A follicle ovulates, it releases its ovum. Then it becomes a corpus luteum.

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22
Q

Explain how CA’s develop.

A

A CL regresses or its destroyed. The tissue remains on the ovary and is now a CA.
Its basically scar tissue.

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23
Q

How can you tell if a female is immature.

A

ONLY follicles. No CA or CL. She hasn’t ovulated.

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24
Q

CL are present when??

A

CL are present during preganancy and in the luteal phase of estrous.

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25
Q

Large follicles are present when?

A

During the follicular phase or towards the end of lactation.

26
Q

Describe what might be present during the prepuberal phase.

A

The follicles are all different sizes. Generally, the larger they are the closer the female is to puberty.

NO CLs or CAs

27
Q

Describe what is present during the mature, follicular phase of estrous cycle or lactation.

A

Medium to large follicles.
No CLs
multiple CAs depending on how many times the female has ovulated or pregnant.

28
Q

Describe what is present during the mature, luteal phase or pregnancy.

A

Small to medium follicles.

CL is present.

CA’s may or may not be present. It depends on if it is the females first time ovulating or being pregnant.

29
Q

The maternal portion of the placentome is called the _____. The fetal portion of the placentome is called the _____.

A

Caruncle. Cotyledon.

30
Q

What are necrotic tips? What kind of animals are they located in and what is their purpose?

A

Dead tissue on the ends of the placenta of the different fetuses.
It is only present in litter bearing species to stop disease transfer from different fetuses.

31
Q

There are three different portions of the placentae?

A

The Amnion, allantois, and chorionic sac.

32
Q

Describe the amnion.

A

The portion of the placentae that is directly around the fetus.

33
Q

Describe the allantois.

A

Feeds into the amnion portion of the placentae. Separate sac coming down from the fetus.

34
Q

Describe the chorion sac.

A

The rest of the placenta tissue.

35
Q

What does the ovary do?

A

Production and release of Ova.
Production of estrogen and progesterone.

36
Q

What does the oviduct do?

A

transport of unfertilized ova.
Fertilization.
Early embryonic development

37
Q

What does the uterus do?

A

Sperm transport after breeding.
Support fetus development during preganancy.

38
Q

What does the Cervix do?

A

Isolation of uterus during pregnancy

In sows, it is a site of semen deposition.

39
Q

What does the broad ligament do?

A

Phsyically supports the uterus.

40
Q

What does the vagina do?

A

Produces secretions that help neutralize invading organism.
Site of semen deposition for most animals.

41
Q

What does the vulva do?

A

Expression of sexual receptivity.

Production of female sex pheromones.

42
Q

What do the testis do?

A

Production of spermatozoa.
Production of testosterone and other androgens.

43
Q

What do the epididymis do?

A

Maturation and storage of sperm.

44
Q

What does the vas deferens do?

A

Sperm trasnport.

45
Q

What does the Urethra do?

A

sperm transport.
Mixes sperm with secretions from secondary sex glands.

46
Q

What do the seminal vesicles do?

A

Production of fluids in semen. Usually contributes the largest volume.

47
Q

WHat do the bulbourethral glands do?

A

Production of fluids in semen, usually the “gel” fraction.

48
Q

What does the penis do?

A

Deposition of semen into female reproduction tract.

49
Q

What does the sheath do?

A

Protection of penis.
Production of male pheromones in some species.

50
Q

What is unique about the ovaries from a horse?

A

No visible ovarian structures. The oviduct doesn’t surround ovary. Ovulation fossa.

51
Q

How many ovarian structures can you see on the outside of the equine ovary?

A

NONE

52
Q

What is unique about the oviduct in the horse?

A

Connects to only one place on ovary. Doesn’t surround it entirely.

53
Q

Why does the uterus of the horse have a large uterine body?

A

Typically has one foal that is large so needs lots of space and support.

54
Q

If you are reading a growth chart and it is in mm, what do you do??

A

Multiply your centimeter measurements by 10.

10 mm = 1 cm.

55
Q

What is the function of the cotyledon on sheep/cattle fetus?

A

Nutrient exchange and waste removal.

56
Q

Which female has the longest cervix?

A

Sow.

57
Q

What is the best way to tell the difference between a tract from a ewe/doe and one from a cow?

A

Size.

58
Q

What is the best way to tell that you are looking at a reproductive tract from a ram/buck?

A

The probocus! The tip of the penis has a projection.

59
Q

What is common about the orientation of the epididymis and the testicles in both male tracts.

A

The epididymi form a “C” around testicle.

60
Q

If the question asks for an animal, then you give what??

A

You have to give the correct name for the male or female animal for the species.

Ex: Boar, sow, bull, cow, mare, ewe, ram, buck, doe.

61
Q

If the question asks for a species, what is it asking for?

A

Generic terms.

Ex: Pig, cattle, sheep, goats, horses, cats.

Porcine, bovine, ovine, caprine, equine, feline.

62
Q
A

Animal Science Lab P1 (2 decks)

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