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

Question

Quizplus · Accepted Answer

At the time of implantation, the human embryo is in the blastocyst stage, which occurs approximately 7-10 days after fertilization. The blastocyst is a hollow sphere of cells that will eventually form the embryonic disk, which will give rise to the various parts of the developing fetus. Therefore, choice A, blastocyst, is the correct answer.

At the Time of Implantation,the Human Embryo Is Called a