Human Trophoblasts

Question

Human trophoblasts
A)form the inner cell mass.
B)form from ectoderm.
C)are the precursors of the mesoderm.
D)are of embryonic origin and function in embryo nutrition.
E)are of maternal origin and function in embryo gas exchange.

Accepted Answer

Human trophoblasts are of embryonic origin and function in embryo nutrition. They differentiate into specialized cells that form the placenta and facilitate the exchange of nutrients, gases, and waste products between the mother and the developing embryo. They do not form the inner cell mass, do not derive from the ectoderm or the mesoderm, and are not of maternal origin.