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Embryology - Developement of the Body Plan

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Quiz by MedSoc
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Last updated: July 16, 2018
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First submittedJuly 16, 2018
Times taken17
Average score60.0%
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Hint
Answer
What is the name given to a zygote once it reaches 128 cells?
Morula
What is another name given to the primitive endoderm?
Hypoblast
Therefore what is the other name for primitive ectoderm?
Epiblast
The process that results in the organisation of the epiblast into three layers.
Gastrulation
How many days into the developement of the embryo does this occur?
13
The point at which cell mugration occurs and defines the head tail axis of the embryo.
Primitive streak
The term given to formation of the neural plate.
Neurulation
What germ layer gives rise to muscles, skeleton, circulatory system and most of reproductive system?
Mesoderm
Hint
Answer
What is the name given to a neural tube closure defect cranially?
Anencephaly
What is the name given to a neural tube closure defect caudally?
Spina bifida
What week in embryonic developement does the anterior neural fold close?
4
What gives rise to the yolk sac?
Hypoblast
What is the name of the process that produces the amniotic cavity?
Cavitation
Whats the name given to the space between the trophectoderm and the yolk sac?
Exocelomic (chorionic) cavity
In neuralation what major structure is formed by the mesoderm?
Notochord
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theboys11G
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Level 69
Oct 28, 2021
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