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DAT Biology > Developmental Embryology > Flashcards

Developmental Embryology Flashcards

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1
Q

How is O2, nutrients and CO2 and metabolic waste exchanged in a fetus?

A

via the umbilical cord and placenta

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2
Q

What are the 4 embryonic membranes?

A

chorion
amnion
yolk sac
allantois

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3
Q

Chorion is…

A

site of nutrient transfer

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4
Q

Amnion is…

A

the sac that contains amniotic fluid for shock absorbance

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5
Q

Allantois is…

A

the outer pocket of the gut that becomes the umbilical cord

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6
Q

Yolk sac is…

A

the site of early development of blood vessels

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7
Q

What are the primary germ layers of the gastrula?

A

Ectoderm
Mesoderm
Endoderm

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8
Q

Muscles and bones are what germ layer?

A

Mesoderm

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9
Q

Nose and mouth epithelium are what germ layer?

A

Ectoderm

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10
Q

The anal canal is what germ layer?

A

Ectoderm

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11
Q

Epithelial stomach lining is what germ layer?

A

Endoderm

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12
Q

The heart is what germ layer?

A

Mesoderm

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13
Q

The liver is what germ layer?

A

Endoderm

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14
Q

The lens and retina of the eye is what germ layer?

A

Ectoderm

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15
Q

The brain is what germ layer?

A

Ectoderm

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16
Q

The gonads are what germ layer?

A

Mesoderm

17
Q

The pancreas is what germ layer?

A

Endoderm

18
Q

The thyroid is what germ layer?

A

Endoderm

19
Q

Connective tissue is what germ layer?

A

Mesoderm

20
Q

Bladder lining is what germ layer?

A

Endoderm

DAT Biology (12 decks)

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