Khorioi

Chorio: membrane that plays an important role in embryonic development in mammals

The chorio is the extraembryonic membrane that forms around the embryo in reptiles, birds and mammals. It is an important component of embryonic development, as it protects the embryo from external influences and is involved in the formation of the placenta in mammals.

In reptiles and birds, the chorio is a thin membrane that forms around the embryo and is filled with fluid, protecting the embryo from mechanical damage and providing optimal conditions for its development.

In mammals, the chorio plays an even more important role. It participates in the formation of the placenta, an organ that provides nutrition and oxygen exchange between mother and fetus. The mammalian chorio has a more complex structure than that of reptiles and birds, and consists of several layers.

One of the layers of the mammalian choroid is a toxic layer that protects the embryo from potentially dangerous substances that may be in the mother's blood. The other layer is the layer that participates in the metabolism between mother and fetus, providing nutrition and oxygen. The third layer is the layer that forms the amniotic sac, which protects the embryo from mechanical damage.

The choroid is an important component of embryonic development, playing a role in protecting and maintaining optimal conditions for the growth and development of the embryo. In mammals, it is also involved in the formation of the placenta, which is a key organ for providing nutrition and oxygen exchange between mother and fetus.