What are the layers of the uterus from inner to outer?

• A. Endometrium, Perimetrium, Myometrium
• B. Perimetrium, Myometrium, Endometrium
• C. Endometrium, Myometrium, Perimetrium
• D. Myometrium, Endometrium, Perimetrium

Answer: (C)

The wall of the uterus is organized in three layers from the inside out: the endometrium, the myometrium, and the perimetrium. The endometrium lines the uterine cavity and undergoes cyclical changes, with a functional layer that thickens and sheds each month and a basalis layer that remains to rebuild it. The myometrium is the thick, middle muscular layer made of smooth muscle arranged in multiple directions to produce powerful contractions during menstruation and labor. The outermost layer is the perimetrium, a serous covering derived from peritoneum that forms the outer surface and helps anchor the uterus within the pelvis. Therefore, from inner to outer: endometrium, myometrium, perimetrium.