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.
Pinnacle is one of several words that aspire to both literal and figurative heights. Others include summit, peak, climax, apex, acme, and culmination. All of these can refer to the highest point of a mountain or structure, or the highest point attained or attainable over a person's lifetime, career, etc.