View source for Template talk:BGDA Practical 3 - Extraembryonic Spaces Interactive

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! Attempt the Quiz - Extraembryonic Spaces &nbsp;
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Here are a few simple Quiz questions that relate to Extraembryonic Spaces  from the lecture and practical.

<quiz display=shuffle>

{Which of the following statements about gastrulation is most correct:
|type="()"}
- gastrulation is required to form the extra-embryonic coeloms
- gastrulation is required to form the intra-embryonic coeloms
- gastrulation occurs only at the primitive node
- gastrulation occurs mainly during week 2 {{GA}} week 4 of development
+ gastrulation forms the trilaminar embryo
|| Gastrulation forms the trilaminar (3 layer) embryo by cell migration at the primitive streak.

{The primitive streak:
|type="()"}
- extends from the primitive node to the parachordal plate
- is the primary inducer during organogenesis
- is the site of migration of epiblast cells to form the mesoderm 
- persists at the parachordal plate
+ all of the above are correct
|| The primitive streak is the site of migration of epiblast cells to form both the endoderm and the mesoderm.

{The migration of intraembryonic mesoderm occurs between the ectoderm and endoderm to give rise to:
|type="()"}
- the allantois
+ the somites
- the buccopharyngeal membrane
- the cloacal membrane
- the neural crest
|| The somites!


</quiz>