Which of the following is formed from cells from the outer layer of the blastocyst and the uterine wall?
A)The gamete
B)The amniotic sac
C)The placenta
D)The blastocyst

Question

Quizplus · Accepted Answer

The placenta is formed from cells from the outer layer of the blastocyst (trophoblast) and the uterine wall. It is responsible for the exchange of nutrients, gases, and waste products between the mother and the developing fetus. The amniotic sac is formed from cells of the inner cell mass of the blastocyst and contains the amniotic fluid in which the fetus develops. The gamete is a reproductive cell (sperm or egg) that fuses with another gamete during fertilization to form a zygote. The blastocyst is the early developmental stage of the embryo, consisting of a hollow ball of cells with an inner cell mass and an outer layer (trophoblast).

Which of the Following Is Formed from Cells from the Outer