Blastocoel is a product of embryogenesis which is formed when the embryo gets implanted in the uterus . After 30 minutes of formation of zygote 1st cleavage occurs (vertical) . ... After 72 hrs of rapid cleavages a 16 - celled stage called Morulla (4th cleavage) is formed .

What does blastocoel develop into?

The blastocyst (Figure 14-1, day 5) consists of a layer of trophoblastic cells, which will develop into the fetal portion of the placenta, an inner cell mass which will develop into the embryo, and a cavity, the blastocoel, which will become the yolk sac.

Where is blastocoel found?

The primordial, fluid-filled cavity inside the early forms of embryo, e.g. of blastula. The presence of this cavity indicates that the embryo is in blastula stage following morula. This cavity is important in the later gastrulation.