Which of the following protects the embryo from external injury?
A
Amnion
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B
Allantois
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C
Chorion
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D
Yolk sac
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Solution
The correct option is A Amnion The amnion is a membrane that closely covers the embryo when first formed. It fills with the amniotic fluid which causes the amnion to expand and become the amniotic sac which serves to provide a protective environment for the developing embryo or fetus. It also protects the external injury.