The embryo develops from the embryonic disk, which is

Question

Quizplus · Accepted Answer

The embryonic disk is the inner layer of cells in the blastocyst that will give rise to the embryo. It is the precursor to all of the body’s tissues, organs, and systems, and is the critical structure from which fetal development begins. Option B is incorrect because the embryonic disk is not an organ of the fetus but rather the starting point for its development. Option C is incorrect because the unfertilized ovum would not contain an embryonic disk. Option D is incorrect because a teratogen is an environmental agent that can cause birth defects, and has nothing to do with the development of the embryonic disk.

The Embryo Develops from the Embryonic Disk, Which Is