The Hollow Cavity Within the Blastocyst is The

Question

The hollow cavity within the blastocyst is the
A)gastrula.
B)morula.
C)blastocoele.
D)yolk sac.
E)amnion.

Accepted Answer

The hollow cavity within the blastocyst is called the blastocoele. This is where the embryo will eventually implant in the uterus. Choice A, gastrula, refers to a later stage of development where the embryo has formed three distinct layers. Choice B, morula, refers to an earlier stage where the embryo is a solid mass of cells. Choice D, yolk sac, is a structure that forms later in development and is responsible for producing red blood cells. Choice E, amnion, is another structure that forms later and is responsible for encasing the embryo in a protective membrane filled with fluid.