What extends from the embryo into the endometrium, contributing to the formation of the placenta?

Name: What extends from the embryo into the endometrium, contributing to the formation of the placenta?
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Question

Quizplus · Accepted Answer

Chorionic villi are finger-like projections that extend from the chorion (a part of the embryo) into the endometrium (the lining of the uterus) and play a crucial role in the formation of the placenta by facilitating nutrient and gas exchange between the mother and the developing fetus.

What Extends from the Embryo into the Endometrium, Contributing to the Formation