Humans are the most complex of all multicellular organisms. All such organisms have billions of cells,... Cows, buffaloes, elephants, monkeys, dogs and cats are all examples of multicellular organisms. Humans are the most complex of all multicellular organisms. All such organisms have billions of cells,...
The outer layer of the uterus is called the perimetrium; it is the visceral. peritoneum of the uterus. The endometrium has two distinct layers (Fig. 28.9c): (1) The functional layer changes in. response to the monthly pattern of hormones.
So in order to really understand the uterine cycle, we also have to understand the structure of the uterus. Uterine Structure. The most important feature of the uterus is its layers - three, to be exact: The perimetrium is a thin lining connecting the uterus to the body lining. The myometrium is a thicker middle muscular layer covering the outside of the uterus. It's located in between the perimetrium and the endometrium, whose muscular nature is extremely important in providing the muscular contractions needed for childbirth.