Question

draw sectional view of human blastocyst. mention the role of tropoblast and inner cell mass​

Answer 1

The inner cell mass (ICM) forms within the blastocyst, prior to its implantation within the uterus. The ICM is a cellular mass on one side of the hollow interior of the round embryo, the outer layer of which is called the trophoblast. The ICM is the only pluripotent cell lineage in the blastocyst.

Answer 2

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$\huge\text{Role\:of:-}$

$\bold{a)\:Tropoblast:-}$

=> It plays an important role in the implantation of zygote in the uterine wall.

=> These cells provide nutrients to the developing embryo.

$\bold{b)\:Inner\:cell\:mass:-}$

=> The inner cell mass eventually gives rise to the tissues of the embryo and some of the extra-embryonic tissues. 

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$\bold{Note:-}$

For the sectional view of human blastocyst, check this attachment.

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