Question

Which of the following human development a stage becomes embedded in the uterine endometrium by a process called implantation and leads to pregnancy?

A)
B)

C)

D)

Answer 1

Hint: The endometrium is the innermost lining level of the uterus, and functions to help adhesions between the opposed walls of the myometrium, thereby maintaining the patency of the uterine cavity.
Complete step-by-step Solution:

A blastocyst is the stage of the human being embryo in which it gets implanted in the uterus.
The process of implantation can be explained as follows 1. Fertilization leads to the formation of a diploid zygote. 2. As the zygote moves through the uterus, mitotic division occurs in the zygote which results in the formation of blastomeres. 3. Embryo with 16-celled- the stage is understood as a morula. 4. Morula undergoes further differentiation and develops into a blastocyst. The cells of the blastocyst get arranged into an external subcaste called trophoblast and inner cells called inner cell mass. 5. Trophoblast subcaste of blastocyst gets attached to the endometrium while inner cell mass differentiates to make an embryo. 6. After attachment, the uterine cells divide rapidly and cause the blastocyst to return bedded in the endometrium of the uterus. This results in gestation.
A blastocyst is bedded in the uterine endometrium by a process called implantation and leads to pregnancy. It possesses an inner cell mass (ICM) which latterly forms the embryo. The external subcaste of the blastocyst consists of cells inclusively called the trophoblast. This subcaste surrounds the inner cell mass and a fluid-filled cavity known as the blastocoel. The trophoblast gives rise to the placenta.

So, option C is correct.

Note: A blastocyst is made of an internal organization of cells with an outer shell. The internal organization of cells turns into the embryo. The embryo is what is going to change into your baby.