Development Of The Human Zygote
Beginning of paper
Hundreds of thousands of times a year a single-celled zygote, smaller
than a grain of sand, transforms into an amazingly complex network of cells, a
newborn infant. Through cellular differentiation and growth, this process is
completed with precision time and time again, but very rarely a mistake ....
Middle of paper
.... eight or sixteen cell stage, the individual cells, or blastomeres,
are thought to have the potential to form any part of the fetus (Leese, Conaghan,
Martin, and Hardy, April 1993). As the blastomeres continue to divide, a solid
ball of cells develops to form the morula (Fig. 1). The accumulation of fluid
inside the morula, transforms it into a hollow sphere called a blastula, which
implants itself into the inner lining of the uterus, the endometrium (Fig. 1).
The inner mass of the blastula ....
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Page count: 9 (approximately 250 words per page)
