Perimetrium: Outer Uterine Layer, Anatomy, and Function
The perimetrium is the thin outer covering of the uterus that protects its surface and reduces friction with nearby pelvic organs.
Myometrium: Uterine Muscle, Contractions, and Function
The myometrium is the thick muscular layer of the uterus that contracts during menstruation, orgasm, labor, childbirth, and postpartum recovery.