Myometrium

The myometrium is the middle layer of the uterus, made up of thick, smooth muscle tissue. It helps the uterus expand during pregnancy and contract during labor to facilitate childbirth. This muscular layer also plays a role in controlling menstrual bleeding by contracting to stop bleeding after periods. The myometrium's ability to stretch and contract is essential for pregnancy and delivery, and its health and strength are vital for normal reproductive function.