Pregnancy Development Flashcards

1
Q

Zygote undergoes series of subdivisions which reduce the amount of cytoplasm in the cells

A

Blastomeres

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2
Q

Blastomeres subdivide for about 3 days to form these solid ball of cells

A

Morula

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3
Q

The morula reaches the uterus about day 4 and during the next 2 days it develops into this hollow ball of cells

A

Blastocyst

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4
Q

The inner cell lay becomes detached from the outer cell layer and the separation yields this fluid filled cavity

A

Amniotic cavity

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5
Q

By the 12th day a third cell layer develops and the blastocyst become this structure

A

Gastrula

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6
Q

During gastric stood 3 germ layers form to give rise to the various organ systems:

A

Ectoderm
Mesoderm
Endoderm

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7
Q

The 3 germ layers form a sheet of cells called

A

Embryonic Disk

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8
Q

When the secondary oocyte is fertilized it becomes a single cell

A

Zygote

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