It's the muscle layer of the uterine wall that helps the uterus contract during labor. The endometrium is made up of two layers. Right above the myometrium is the stratum basalis, or basal layer.

Fibroids occur when a single muscle cell in the wall of the uterus multiplies ... subserous (located in the outer wall of the uterus); intramural (found in the muscular layers of the uterine wall); ...

The thick center layer of the uterus is the myometrium, which is made of smooth muscle cells. The outer layer is called the perimetrium or serosa and is made of thin epithelial cells.

With advancing pregnancy, the isoenzyme profile in uterine muscle shifts toward a more anaerobic profile, speculatively to facilitate uterine efficiency during periods of low oxygen that accompany ...