Question

Why in humans do embryos get attached to the uterine wall?

Answer 1

Implantation:

1. Implantation is the stage of human pregnancy.
2. In this stage, an embryo gets attached to the uterine wall.
3. It happens during blastocyst conditions.
4. The conceptus is known as a blastocyst during this prenatal developmental stage.
5. A human embryo receives nutrients and oxygen from the uterus.
6. The embryo gets nutrition from the mother’s blood with the help of a special tissue called the placenta.
7. This is a disc that is embedded in the uterine wall. It contains villi on the embryo’s side of the tissue.
8. The placenta provides oxygen and nutrients to the growing fetus in the uterus of the mother.

Importance of implantation:

1. A diploid zygote is formed as a result of fertilization.
2. Mitotic divisions occur in the zygote as it moves through the uterus,
3. It results in the formation of blastomeres.
4. A morula is an embryo with 16 celled stages.
5. Morula develops into a blastocyst after further cleavage.
6. The blastocyst's cells are organized.
7. They develop into an outer layer called trophoblast and inner cells called inner cell mass.
8. The blastocyst's trophoblast layer attaches to the endometrium.
9. The inner cell mass differentiates to form an embryo.
10. Following attachment, the uterine cells divide rapidly.
11. It causes the blastocyst to become embedded in the uterine endometrium.
12. This results in pregnancy.