미해결 질문
Explain how the flat embryonic disc takes on the cylindrical shape of a tadpole.
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28. Human Development
Early Embryonic Development
객관식
A hollow ball of cells created by cleavage is called a(n)?
A
Blastocyst.
B
Morula.
C
Trophoblast.
D
Embryoblast.
검증된 단계별 안내1
Begin by understanding the process of early embryonic development, which includes stages such as fertilization, cleavage, and formation of structures like the morula and blastocyst.
Cleavage is a series of rapid mitotic divisions that occur after fertilization, leading to the formation of a multicellular structure from the zygote.
The morula is an early stage in embryonic development, consisting of a solid ball of cells resulting from cleavage. It precedes the formation of the blastocyst.
The blastocyst is a later stage in development, characterized by a hollow ball of cells. It consists of an outer layer called the trophoblast and an inner cell mass known as the embryoblast.
Identify the correct term for a hollow ball of cells formed by cleavage. Based on the descriptions, the blastocyst is the structure that fits this definition.
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