What occurs during the germinal stage of prenatal development?
What will be an ideal response?
In this period, the zygote divides into multiple cells? first into 2 cells within 36 hours,
then into 32 cells in the subsequent 36 hours. It takes 3 to 4 days before the zygote
reaches the uterus. After wandering there for another 3 to 4 days, the process of
implantation will take up to one week. The time period between conception and
implantation is called the germinal period. Also during this time, what begins as a fluid
filled ball called the blastocyst differentiates itself. Some cells form the embryonic disk
that will eventually become the embryo and fetus. The trophoblast, which begins as one
layer of cells, differentiates into four membranes that will protect and nourish the
embryo.
LEARNING OBJECTIVES: VOYG.RATH.17.3.1 - Describe the events that occur during the germinal stage of
prenatal development.
KEYWORDS: Bloom's: Understand
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