Which layer of uterus nourishes the embryo after implantation?

Explanation

The layer of the uterus that nourishes the embryo after implantation is the Endometrium [1, 2]. 

Endometrium:

This is the inner lining of the uterus.

It thickens and becomes rich in blood vessels and glands each month to prepare for a potential pregnancy.

After implantation, the developing embryo is embedded in this layer and receives nourishment from it [1, 2].

Myometrium:

This is the thick middle layer of smooth muscle that makes up the bulk of the uterus.

Its primary function is contraction during childbirth and menstruation [1, 2].

Perimetrium:

This is the outer serous layer that covers the outer surface of the uterus, providing protection and structure [1].

Cervical epithelium:

This tissue lines the cervix (the lower, narrow part of the uterus that opens into the vagina) and does not play a direct role in nourishing the embryo after implantation within the main uterine body [1]. 

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