The extraembryonic membrane that forms blood cells is the
A) yolk sac.
B) amnion.
C) allantois.
D) chorion.
E) decidua.

Question

Quizplus · Accepted Answer

The extraembryonic membrane that forms blood cells is the yolk sac. It is responsible for producing blood cells in the early embryo and also provides nutrients for the developing embryo until the placenta takes over this role. The other options are incorrect as they have different functions in the developing embryo.

The Extraembryonic Membrane That Forms Blood Cells Is the