The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles (amniotes). It is also present around the embryo of other animals, like insects and molluscs.

2018年2月26日 · The chorion, on the other hand, is the outer membrane that surrounds the amnion, the embryo, and other membranes and entities in the womb. It is considered as the support platform of the fetus and the amnion.

2019年10月4日 · The chorion is one of the membranes that surround the fetus while it is still being formed. In mammals, the fetus lies in the amniotic sac, which is formed by the chorion and the amnion and separates the embryo from the mother’s endometrium.

2023年10月30日 · The chorion is the outermost of the four membranes surrounding the developing fetus, consisting of trophoblast and underlaying extraembryonic mesoderm. It is continuous with the the lining of the uterine wall (endometrium) superficially and is in contact with the amnion deep to it.

chorion, in reptiles, birds, and mammals, the outermost membrane around the embryo. It develops from an outer fold on the surface of the yolk sac. In insects the chorion is the outer shell of the insect egg.

2023年4月28日 · The chorion is the outermost membrane that surrounds the developing embryo, while the amnion is a fluid-filled sac that surrounds the embryo and helps to protect it from mechanical shock and dehydration.

Amnion and chorion are both fetal membranes that play crucial roles in the development and protection of the fetus during pregnancy. The amnion is the innermost membrane that surrounds the developing embryo and later the fetus.

The chorion is comprised of multiple layers of cytotrophoblast cells and a stroma that fuses with the amnion in the mature fetal membrane. These cells contain stem cell markers, cluster of differentiation (CD) CD34 and CD45, reinforcing the hematopoietic potential of the chorion.

The meaning of CHORION is the highly vascular outer embryonic membrane of reptiles, birds, and mammals that in placental mammals is associated with the allantois in the formation of the placenta.

2024年3月2日 · Chorion is a vital membrane that plays a key role in the development of eggs. This protective layer surrounds the embryo and provides essential nutrients for its growth. Understanding the functions of the chorion is crucial in studying embryology and …