THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Myometrium. This is the thick middle muscle layer of the corpus or fundus. It expands during pregnancy to hold the growing baby. It contracts during labor to push the baby out.

Detailed explanation-2: -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.

Detailed explanation-3: -The uterus has a muscular outer layer called the myometrium and an inner lining called the endometrium.

Detailed explanation-4: -The layers are three in number: external, middle, and internal. The external and middle layers constitute the muscular coat proper, while the inner layer is a greatly hypertrophied muscularis mucosæ. During pregnancy the muscular tissue becomes more prominently developed, the fibers being greatly enlarged.