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.
The uterus is a pear-shaped, muscular, hollow organ with a triple-layered wall: an outer tunica serosa, the perimetrium, a thick tunica muscularis, the myometrium, and an inner tunica mucosa, the endometrium.The endometrium is the layer in which the implantation takes place.his takes place via the proliferation and differentiation of the endometrium. If the implantation does not occur, the functional (outermost) layer of the endometrium is shed and expulsed, leading to menstruation.