Chorion
Chorion
Chorion (/kɔːriːɒn/) is an important term in the field of embryology and obstetrics. It refers to the outermost fetal membrane in mammals, birds, and reptiles that develops from an outer fold on the surface of the yolk sac.
Etymology
The term "Chorion" is derived from the Greek word "khorion," which means "skin" or "hide."
Function
The chorion, along with the amnion, forms the amniotic sac that protects and nourishes the developing fetus. The chorion also contributes to the formation of the placenta, which facilitates the exchange of nutrients and waste products between the mother and the fetus.
Related Terms
- Amnion: The innermost membrane that encloses the embryo.
- Placenta: An organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange.
- Embryo: An early stage of development of a multicellular organism.
- Obstetrics: A branch of medicine and surgery concerned with childbirth and the care of women giving birth.
- Embryology: The branch of biology and medicine concerned with the study of embryos and their development.
See Also
External links
- Medical encyclopedia article on Chorion
- Wikipedia's article - Chorion
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