EMBRYOLOGY
FERTILISATION EARLY DEVELOPMENT OF EMBRYO AND IMPLANTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What extraembryonic structure protects the fetus from temperature changes?
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chorion
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allantois
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yolk sac
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amnion
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Explanation:
Detailed explanation-1: -Amniotic membrane (AM) or amnion is a thin membrane on the inner side of the fetal placenta; it completely surrounds the embryo and delimits the amniotic cavity, which is filled by amniotic liquid.
Detailed explanation-2: -These are called the yolk sac, amnion, chorion, and allantois. Each membrane provides a supportive role for the developing embryo. The yolk sac, or umbilical vesicle, is the first of the extra-embryonic membranes to appear. The chorion also develops from the yolk sac and functions to nourish the developing embryo.
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