The Endoderm Forms

Question

The endoderm forms
A) muscle.
B) blood.
C) neural tissue.
D) skin.
E) the urinary bladder.

Accepted Answer

The endoderm forms the innermost layer of cells in the early embryo, and it gives rise to the lining of the respiratory and digestive systems, as well as the urinary bladder. Therefore, choice E (the urinary bladder) is the best answer. None of the other options (muscle, blood, neural tissue, and skin) are derived from the endoderm.