THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -About a week after the sperm has fertilized the egg, the zygote has traveled to your uterus. It’s now a growing cluster of about 100 cells called a blastocyst. The blastocyst then attaches itself to the lining of your uterus (the endometrium). This attachment process is called implantation.

Detailed explanation-2: -Implantation of the preembryo in the uterine lining begins about five days after fertilization. Implantation can be completed as early as eight days or as late as 18 days after fertilization, but usually takes about 14 days.

Detailed explanation-3: -A pregnancy starts with fertilization, when a woman’s egg joins with a man’s sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.