what are the embroyonic membranes in humans?
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The extraembryonic membranes consist of the chorion (the combination of trophoblast plus underlying extraembryonic mesoderm), amnion, yolk sac, and allantois. The amnion, a thin ectodermal membrane lined with mesoderm, grows to enclose the embryo like a balloon.
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The extraembryonic membranes consist of the chorion (the combination of trophoblast plus underlying extraembryonic mesoderm), amnion, yolk sac, and allantois. The amnion, a thin ectodermal membrane lined with mesoderm, grows to enclose the embryo like a balloon..
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