MICROANATOMY

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: -At the same time, the small cluster of dividing cells moves through the fallopian tube to the lining of the uterus. There it implants and starts to grow. For 8 weeks after fertilization, it is called an embryo. From 9 weeks after fertilization until birth, it is called a fetus.

Detailed explanation-3: -The fetus is inside the membrane sac within the uterus and high within the abdomen. The muscles of your abdomen support much of its weight.