Identify the human developmental stage shown below as well as the related right place of its occurrence in a…
Identify the human developmental stage shown below as well as the related right place of its occurrence in a normal pregnant woman and select the right option for the two together
(a)
(b)
(c)
(d)
Solution
An embryo with about 64-cells and a cavity called blastocoel is known as blastocyst. It is composed of an outer envelope of cells the trophoblast. Implantation is attachment of blastocyst to the uterine wall. This occurs 7-days after fertilization. It develops from 8-celled morula to 16-celled morula and then 64-celled stage. The blastocyst sinks into a pit formed in the endometrium and gets completely burried in the endometrium.
