Multiple Choice
During embryonic development (weeks 3-8), which organ develops and is fully functional by the end of the first trimester?
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28. Human Development
Embryonic Development (Weeks 3-8)
Multiple Choice
Which of these statements regarding the early stages of embryonic development is false?
A
The zygote undergoes cleavage to form a multicellular structure.
B
The blastocyst forms after the morula stage.
C
The inner cell mass of the blastocyst will develop into the embryo.
D
Gastrulation occurs before the formation of the blastocyst.
Verified step by step guidance1
Understand the sequence of early embryonic development stages: zygote, cleavage, morula, blastocyst, and gastrulation.
Recognize that cleavage is the process where the zygote divides to form a multicellular structure, leading to the morula.
Identify that the blastocyst forms after the morula stage, characterized by a fluid-filled cavity and differentiation into the inner cell mass and trophoblast.
Acknowledge that the inner cell mass of the blastocyst is responsible for developing into the embryo.
Clarify that gastrulation, which involves the formation of the three germ layers, occurs after the blastocyst stage, not before.
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