GB 23. Embryology of the Gut Tube I

Question 1

What are the 2 main functions of the yolk sac?

Answer 1

[1] generation of blood cells (in the wall of the sac)

[2] origin of primordial germ cells
- PGCs are precursors that give rise to gametes

Question 2

Where is the yolk sac located around a month in to the pregnancy?

Answer 2

Yolk Sac is connected to the gut tube through the Vitelline Duct

Question 3

What is the Vitelline (Vitellointestinal) Duct?

Answer 3

it connects the gut tube to the yolk sac