At the time of implantation, the human embryo is called a ______. A. blastocyst B. gastrula C. fetus D. zygote

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23-08-2022
Biology

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At the time of implantation, the human embryo is called a ______. A. blastocyst B. gastrula C. fetus D. zygote

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SidHussain SidHussain · Answer 1 · 2022-08-26T06:40:44+02:00

At the time of implantation, the human embryo is called A. blastocyst

A blastocyst is a ball of cells that can actively divide themselves, formed after a few days from fertilization.

It is during this stage that the embryo, now called the blastocyst will connect to the uterine wall. This process is referred to as implantation.

Later, during the fetal stage, the blastocyst cells get involved in providing nourishment and protection to the fetus.

As the process of implantation occurs after five to six days, hence at that time the embryo will be referred to as a blastocyst. Hence, the correct option is A. blastocyst.

Other options, like option D. zygote is incorrect because the zygote cycle is a brief one that happens instantly after the sperm has joined the egg whereas the implantation process occurs five to six days later.

To learn more about blastocyst, click here:

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