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.
Full Definition of PINNACLE. 1. : an upright architectural member generally ending in a small spire and used especially in Gothic construction to give weight especially to a buttress. 2. : a structure or formation suggesting a pinnacle; specifically: a lofty peak.3. : the highest point of development or achievement: acme.ull Definition of PINNACLE. 1. : an upright architectural member generally ending in a small spire and used especially in Gothic construction to give weight especially to a buttress. 2. : a structure or formation suggesting a pinnacle; specifically: a lofty peak.