28-26
Wall of the Uterus
nComposed of three concentric tunics:
nPerimetrium
nMyometrium
nEndometrium
nThe outer tunic of most of
the uterus is a serosa called the perimetrium.
ncontinuous with the broad ligament
nThe myometrium is the
thick, middle tunic of the uterine wall formed from three intertwining layers of smooth muscle.
nin the nonpregnant uterus, the muscle cells are
less than 0.25 millimeters in
length
nduring the course of a pregnancy, smooth muscle cells increase both in size and in number