The ________ is the Site of Early Blood Cell Formation

Question

The ________ is the site of early blood cell formation.
A) trophoblast
B) blastocoele
C) amnion
D) allantois
E) yolk sac

Accepted Answer

The yolk sac is the site of early blood cell formation, as well as primordial germ cell formation. This structure is found in the developing embryo and serves as a source of nutrients before the placenta is fully developed. The other choices listed (trophoblast, blastocoele, amnion, allantois) do not play a role in early blood cell formation.