Template:BGDA Practical 6 - Week 3 Interactive

From Embryology

Week 3 Interactive Component

Attempt the Quiz - Week 3  

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

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


2 Which of the following is the most correct statement about the primitive streak:

  extends from the primitive node to the parachordal plate
  is a primary inducer during organogenesis
  is a site of migration of epiblast cells to form the mesoderm
  persists as the parachordal plate
  all of the above are correct

3 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

4 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

5 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.

6 The amniotic cavity appears initially as a slit-like space within the:

  exocoelomic (Heuser’s) membrane
  extra-embryonic mesoderm
  connecting stalk

7 Which of the following processes are necessary for the early development of the human embryo?

  cell proliferation
  cell migration
  cell fusion
  differential growth
  all of the above

Practical 6: Week 3 | Week 4 | Week 5 | Week 6 | Week 7 | Week 8