Which of the following is not a layer of the uterus? a. endometrium b. perimetrium c. myometrium d. mesometrium

The thick wall of the uterus has 3 layers:

The endometrium is the inner layer that lines the uterus. It is made up of glandular cells that make secretions.

The myometrium is the middle and thickest layer of the uterus wall. It is made up mostly of smooth muscle.

The perimetrium is the outer serous layer of the uterus.

So your answer would be: Mesometrium