Template:BGDA Practical 6 - Week 3 Interactive: Difference between revisions

From Embryology
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|| During folding in the third week all three germ cell layers (ectoderm, mesoderm and endoderm) fold together ventrally as described.
|| During folding in the third week all three germ cell layers (ectoderm, mesoderm and endoderm) fold together ventrally as described.
{The migration of intra-embryonic mesoderm occurs between the ectoderm and endoderm to give rise to:
|type="()"}
-  the buccopharyngeal membrane
-  the cloacal membrane
-  the allantois
-  the somites
+  all of the above
|| During gastrulation in week 3 to 4, intra-embryonic mesoderm, or simply "mesoderm" occurs between the ectoderm and endoderm forming the {{somite}}s. Extra-embryonic mesoderm lies outside the embryo and is associated with the placenta and fetal membranes.
{The buccopharyngeal membrane is made up of:
|type="()"}
-  embryonic ectoderm, mesoderm and endoderm
-  endoderm fused with mesoderm
-  ectoderm fused with mesoderm
+  ectoderm fused with endoderm
-  the cephalic end of notochordal process
|| The buccopharyngeal membrane is made up of ectoderm fused with endoderm and lies above the cephalic end of notochordal process.


{The intraembryonic coelom finally forms
{The intraembryonic coelom finally forms

Revision as of 15:36, 12 May 2019

Week 3 Interactive Component

Attempt the Quiz - Week 3  
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Here are a few simple Quiz questions that relate to Week 3 (GA week 5) from the lecture and practical.


  

1 During embryonic disc folding in week 3 only the ectoderm layer folds ventrally left, right and above and below the notochord.

  true
  false

2 The migration of intra-embryonic mesoderm occurs between the ectoderm and endoderm to give rise to:

 the buccopharyngeal membrane
 the cloacal membrane
 the allantois
 the somites
 all of the above

3 The buccopharyngeal membrane is made up of:

 embryonic ectoderm, mesoderm and endoderm
 endoderm fused with mesoderm
 ectoderm fused with mesoderm
 ectoderm fused with endoderm
 the cephalic end of notochordal process

4 The intraembryonic coelom finally forms

  pericardial, pleural and peritoneal cavity.
  single pericardial cavity and two pleural and two peritoneal cavities.
  neural tube lumen, gastrointestinal tract lumen and neural crest.
  the paired dorsal aortas running the embryo.