Stages of Embryonic Development · Zoology

During gastrulation, the process where a sheet of cells folds inward into the blastocoel is called:

  1. Involution
  2. Epiboly
  3. Invagination
  4. Delamination
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Correct answer: Invagination

Invagination is the local inward folding of a cell layer, similar to poking a soft rubber ball. This is one of several types of cell movements that occur during gastrulation to create the archenteron.

Difficulty: Medium Question 12 of 20

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