Implantation: Implantation occurs when the blastocyst embeds itself into the endometrial lining of the uterus, typically 610 days after fertilization, initiating early pregnancy and placenta formation.
Size of Uterus Throughout Pregnancy: The uterus expands dramatically during pregnancy, growing from a small pelvic organ to a structure that can reach the rib cage to accommodate fetal development.
Stages of Childbirth: Childbirth occurs in three stages: dilation of the cervix, delivery of the baby, and expulsion of the placenta, each marked by specific physiological and muscular events.
