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.
uk â /ËpÉªn.É.kÉl/ us â /ËpÉªn.É.kÉl/. âº [ C usually singular ] the most successful or admired part of a system or achievement: By the age of 32 she had reached the pinnacle of her career.
apex - the highest point (of something); at the peak of the pyramid. acme, vertex, peak. crown - the part of a hat (the vertex) that covers the crown of the head. roof peak - the highest point of a roof. extreme point, extremum, extreme - the point located farthest from the middle of something.