The lamina propria is full of blood vessels and lymphatic channels. The muscular layer is composed of clean muscle fibers, having an outer layer of longitudinal muscle, an interior layer of circular muscle, and oblique muscle mass fibers in between. The outer layer, the adventitia, is a skinny dense layer https://kameronuisai.blog5star.com/31579950/terror-us-can-be-fun-for-anyone