Hematopoesis Flashcards
1
Q
Functions of the yolk sac in mammals?
A
The yolk sac is lined with extraembryonic endoderm and mesoderm.
- The mesoderm gives rise to Primordial Germ Cells (PGC) that form spermatogonia and oogonia.
- Mesodermal cells become organised into blood islands to supply oxygen to the embryo.