In What Developmental Stage Does the Human Embryo Implant in the Wall

Question

In what developmental stage does the human embryo implant in the wall of the uterus?
A)As a zygote
B)In the morula stage
C)In the blastocyst stage
D)In the gastrula stage
E)During organogenesis

Accepted Answer

The blastocyst is the developmental stage at which the human embryo implants in the wall of the uterus. The blastocyst is a hollow ball of cells with an inner cell mass that will become the embryo and an outer layer of cells that will develop into the supportive tissues of the placenta. Implantation typically occurs around 6-7 days after fertilization.