Organ Histology of the Uterus 

by

Sarah Zambrano

     The above picture is of the tissue layers in the uterus. The hollow cavity inside the uterus is called the lumen, and then there are three different layers of tissue that make up the uterus. These three layers are the endometrium, myometrium, and perimetrium.

     The endometrium is the inner layer of uterine tissue. It changes throughout a woman's menstrual cycle and is a glandular tissue that can secrete fluids and is thick with blood vessels. The endometrium becomes thicker during a woman's menstrual cycle in preparation for pregnancy and growing a fetus. If no fetus is detected at the end of the cycle, the outer layer of the endometrium is shed and the process begins over again.

     The myometrium is the middle layer of tissue, made up primarily of smooth muscle cells. The main function of the myometrium is to maintain a resting state when no uterine movement is needed, and to contract the uterus during menstruation and child birth.     

     The outer layer of the uterus is the perimetrium, and it faces out towards the abdominal cavity. It can secrete fluid that acts as a lubricant to reduce friction with the rest of the body. The perimetrium is made up of lose connective tissue.

Sources:

https://www.youtube.com/watch?v=IezWjLUMd8M

https://www.cancer.ca/en/cancer-information/cancer-type/uterine/uterine-cancer/the-uterus/?region=on

https://legacy.owensboro.kctcs.edu/gcaplan/anat2/histology/histo%20C%20female%20reproductive.htm