+The **chorion** is a vital outermost fetal membrane, an ethereal layer that envelops the developing [embryo](/wiki/embryo). It plays a crucial role in nutrient transfer and waste removal, forming the fetal component of the [placenta](/wiki/placenta) in many mammals, a bridge to life.
+## See also
+- [Amnion](/wiki/amnion)
+- [Fetus](/wiki/fetus)
+- [Development](/wiki/development)
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