For the initially 12 hrs after conception, the fertilized egg remains a single cell. After 30 hours or so, it divides from one cell right into two. Some 15 hours later on, the 2 cells divide to become 4. And at the finish of 3 days, the fertilized egg cell has actually come to be a berry-favor structure comprised of 16 cells. This structure is referred to as a morula, which is Latin for mulberry.
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During the initially 8 or 9 days after conception, the cells that will ultimately develop the embryo continue to divide. At the same time, the hollow structure in which they have actually arranged themselves, referred to as a blastocyst, is slowly carried towards the uterus by tiny hair-prefer structures in the fallopian tube, dubbed cilia.
The blastocyst, though just the size of a pinhead, is actually created of numerous cells. During the critically important process of implantation, the blastocyst have to attach itself to the lining of the uterus or the pregnancy will certainly not make it through.
If we take a closer look at the uterus, you can view that the blastocyst actually buries itself in the lining of the uterus, wbelow it will have the ability to obtain nourishment from the mother’s blood supply.
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Updated by: John D. Jacobboy, MD, Professor of Obstetrics and Gynecology, Loma Linda College School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reregarded by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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