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Gross Anatomy > Embryology Week 3 > Flashcards

Embryology Week 3 Flashcards

1
Q

Gastrulation

A

Day 16

formation of Primitive Streak at caudal end

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2
Q

Primitive Pit and Groove

A

areas where cells leave primitive streak and move into interior of embryonic disc

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3
Q

Becoming Trilaminar

A

cells coming through primitive pit and groove replace hypoblast cells to make definitive endoderm
other cells go b/t endoderm and epiblast to make intraembryonic mesoderm

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4
Q

Ectoderm

A

new name for epiblast after gastrulation

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5
Q

Prechordal Plate

A

future mouth

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6
Q

Cardiogenic Plate

A

future Heart

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7
Q

Extraembryonic Mesoderm

A

Amnion, Yolk Sac, Allantois (future placenta)

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8
Q

Order of Migration from Cranial to Caudal during Gastrulation

A 
Notochord
Head Mesoderm
Somites
Intermediate Mesoderm
Lateral Plate Mesoderm
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9
Q

Notochord

A

future vertebrae

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10
Q

Origin of Notochord

A

Primitive Node

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11
Q

Head Mesoderm

A

Unsegmented cells

form muscles of face, jaw, throat

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12
Q

Mesenchyme

A

mesodermal embryonic tissue that develops into connective and skeletal tissue; blood and lymph

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13
Q

Somites

A

part of mesoderm
37 pairs
future axial skeleton, muscles of neck, body wall, limbs, dermis of neck

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14
Q

Intermediate Mesoderm

A

connects somites with lateral plate mesoderm

future urinary system and gonads

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15
Q

Lateral Plate Mesoderm

A

Parietal and Visceral layers

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16
Q

Parietal Lateral Plate Mesoderm

A

forms lateral body wall

17
Q

Visceral Lateral Plate Mesoderm

A

forms walls of gut tube

18
Q

Steps of Neurulation

A

Formation of Neural Plate
Shaping of Neural Plate
Bending of Neural Plate
Closing of Neural Groove

19
Q

Neural Induction

A

primitive node induces ectoderm to thicken to form the neural plate

20
Q

Neural Plate

A

Earliest rudiment of CNS

21
Q

Forming Neural Tube

A

Neural Plate folds on itself

Gross Anatomy (30 decks)

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