Embryogenesis and Gametogenesis Quiz

Embryonic Development

• The process of formation and development of the embryo is called embryogenesis.

Gamete Development

• A haploid cell that develops into an egg is called an oocyte.
• The term for the process of formation of male and female gametes is gametogenesis.

Hormonal Regulation

• The Corpus Luteum produces progesterone, which leads to the formation of the placenta.
• The layer that produces progesterone and leads to the formation of the placenta is the syncytiotrophoblast.

Fertilization

• The process of sperm entering the egg is called fertilization.

Menstrual Cycle

• The first menstruation, when a mature egg is released from the ovary, is called menarche.

Blastocyst Development

• The outermost layer of the blastocyst that later contributes to the placenta is the trophoblast.
• The syncytiotrophoblast is the layer that accumulates fibrin at the end of the first week and forms the mound through blastocyst.

Implantation

• As implantation begins in the uterine mucosa, the syncytiotrophoblast layer disappears.
• The cells that penetrate the uterine mucosa as implantation begins are the trophoblastic cells.

Embryo Protection

• The structure that protects the embryo from injury and contains the amniotic fluid is the amnion.

Notochord Formation

• The notochord forms from the mesoderm layer.

Angiogenesis

• The cells that give rise to angiogenic cells and flatten to form the blood vessels are the mesodermal cells.