Multiple Choice
Which of the following structures of an embryo are derived from the ectoderm?
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28. Human Development
Embryonic Development (Weeks 3-8)
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What is a characteristic of the gastrula stage of embryo development?
A
Formation of the blastocoel
B
Establishment of the three germ layers
C
Implantation into the uterine wall
D
Cleavage divisions
Verified step by step guidance1
Understand the stages of embryonic development: The gastrula stage follows the blastula stage and is crucial for establishing the basic body plan of the embryo.
Identify the key process during the gastrula stage: The formation of the three germ layers—ectoderm, mesoderm, and endoderm—is a defining characteristic of this stage.
Differentiate between the processes: Formation of the blastocoel occurs during the blastula stage, not the gastrula stage.
Recognize the role of the three germ layers: These layers give rise to all tissues and organs in the body, making their establishment a critical event in development.
Clarify the timing of implantation: Implantation into the uterine wall typically occurs before the gastrula stage, during the blastocyst stage.
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