Implantation occurs during the blastocyst stage when the embryo attaches to the uterine wall.

The corpus luteum primarily produces progesterone, which helps maintain the uterine lining during early pregnancy.

Estrogen is the primary hormone that regulates the menstrual cycle, influencing the growth and maintenance of the endometrium.

Neurulation is the process during embryonic development that leads to the formation of the nervous system.

Fertilization is the process where sperm and egg cells fuse to form a zygote.

The inner cell mass of the blastocyst develops into the embryo, while the outer layer forms the placenta.

Fertilization occurs in the fallopian tubes, not in the placenta, which is responsible for nutrient transfer, gas exchange, and hormone production.

The placenta is responsible for the exchange of nutrients and waste between the mother and fetus.

The follicular phase is characterized by the thickening of the endometrium in preparation for potential implantation.