THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -During fertilization, the sperm and egg unite in one of the fallopian tubes to form a zygote. Then the zygote travels down the fallopian tube, where it becomes a morula. Once it reaches the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the uterine lining-a process called implantation.

Detailed explanation-2: -The uterus is created by fusion of the Müllerian ducts by the 10th week of gestation. In the 20th week of pregnancy, the uterine mucosa is fully differentiated into the endometrium (Arey, 1974). Complete absence of the uterus is rare and always coupled with absence of a vagina.

Detailed explanation-3: -Fetus: The term for an unborn baby from the eighth week after fertilization until birth. Placenta: An organ, shaped like a flat cake, which only grows during pregnancy and provides nourishment to and takes waste away from the fetus.

Detailed explanation-4: -The female reproductive system derives from four origins: mesoderm, primordial germ cells, coelomic epithelium, and mesenchyme. The uterus forms during Mullerian organogenesis accompanied by the development of the upper third of the vagina, the cervix, and both fallopian tubes.