From what the amnion of mammalian embryo is derived?
Amnion is an extraembryonic membrane also known as fetal membrane along with chorion, allantois, and yolk sac. Amnion closely covers the embryo and it’s filled with amniotic fluid that lets the amnion to expand to form a sac that protects the developing embryo.
The development of a human embryo is called embryogenesis, which starts with the fertilization of an ovum by a sperm cell forming a zygote which further undergoes multiple mitotic divisions throughout without any growth kown as the cleavage. The cellular differentiation of the cleaved cells develops a multicellular embryo.
Germ layers are the primary layers of cells that form during embryonic development and are of three main kinds namely endoderm, mesoderm, and ectoderm respectively.
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