>>82895601- The fallopian tubes: Either of the paired oviducts that extend from ovary to uterus for conduction of the ovum in mammals. The sperm, having fertilized the egg, proceeds on along the fallopian tubes. The zygote during this journey begins to divide and reproduce itself.
2- The uterine wall: The stage during which the embryo hangs on the wall.
3- Amniotic sac: The sac fills with a fluid that surrounds the fetus. The next step of evolution calls for a longer period of development.
A glance at the outward aspect presents a uniformity of sight. But were we to dwindle to the size of a tiny cell and explore the environment, we would see how different these chambers were. The first dark space is reminiscent of a monumental tunnel with respect to the cell. The second compartment is a dark forest where no light penetrates, and the third compartment reflects the dark depths of the sea.
There are three interconnected layers or three spaces through which the fetus passes. God knows whether the reference is to one or to the other. And there are three stages through which the embryo evolves. The three stages in question are:
1- The pre-embryonic stage: This stage is called the “first trimester.” As the cells multiply, they get organized in three layers; this process takes two weeks.
2- The embryonic stage: Basic organs begin to emerge from the cell layers. This stage is referred to as the “second trimester” extending from the second week to the eighth week.
3- The fetus stage: The face, hands and feet appear and the human figure is formed. This is the “third trimester” that extends from the 8th week until birth.
