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Reproduction T2 > Pregnancy and Placentation > Flashcards

Pregnancy and Placentation Flashcards

1
Q

4 placental fetal membranes

A

Yolk sac, amnion, chorion, allantois

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2
Q

Amnion

A

Membrane immediately surrounding the fetus and encloses the amniotic cavity

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3
Q

Amniotic cavity

A

Filled with fluid to provide physical support to the fetus

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4
Q

Choriovitelline

A

Marsupials

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5
Q

Choriovitelline then Chorioallantoic

A

Horse, carnivore, feline

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6
Q

Chorioallantoic

A

Ruminants, pigs, humans

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7
Q

Functional unit of placenta

A

Chorionic villus

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8
Q

Discoid

A

Disk shape. Making contact with just one part of the uterine wall. Humans and rodents

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9
Q

Cotyledonary

A

Attached to maternal caruncles and then form the placate. Ruminants

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10
Q

Zonary

A

A band around the fetus. Dogs, cats, foxes.

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11
Q

Diffuse

A

Through the entire uterine surface for exchange. Equine and pigs.

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12
Q

Invasive implantation

A

Conceptus breaks through the surface endometrium

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13
Q

Types of invasive implantation

A

Interstitial and eccentric

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14
Q

Non-invasive

A

Epithelial integrity retained

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15
Q

Interstitial Invasive Implantation

A

Very deep invasion and surface epithelium restores

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16
Q

Eccentric Invasive Implantation

A

Stroma only partially invaded and conceptus continues to project into the lumen . Doesn’t completely implant in the wall

17
Q

Animals with a non-invasive implantation

A

Cow, ewe, pig, mare

18
Q

Animals with an invasive, eccentric implantation

A

Rodents, dogs, cats

19
Q

Animals with invasive interstitial implantation

A

Humans

20
Q

Interdigitation attachment point types

A

Folded, lamellar, villous

21
Q

Folded interdigitation attachment points

A

Pig

22
Q

Lamellar Interdigitation attachment points

A

Carnivores

23
Q

Villous interdigitation attachment points

A

Equids, ruminants, humans, rodents

24
Q

What does the blastocyst cause

A

The elongation of the fetus

25
Q

Areolae

A

Regions specialized for histotrophic secretions

26
Q

Caruncles

A

Site on the maternal placenta that attaches to the fetal membrane

27
Q

Placentome

A

Fetal cotyledon + maternal caruncle

28
Q

Cotyledon

A

Fetal side of the placenta

29
Q

Black stripe on fetal dog membrane

A

Pigmentosae which contain hemoxygenase

30
Q

Hemotrophic

A

Direct transfer between fetal and maternal bloodstreams by definitive placenta

31
Q

Histotrophic

A

Uterine secretions of maternal milk or juices

Reproduction T2 (6 decks)

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