BIOL302 Lecture Notes - Lecture 11: Parenchyma, Jejunum, Rectum
28 Feb 2017
School
Department
Course
Professor
Document Summary
Mucosa: innermost layer, composed of inner epithelium, lamina propria (loose connective tissue) and muscularis mucosa. Muscularis mucosa: outermost layer of the mucosa, thin folded layer of smooth muscle, follows shape of lumen. Submucosa: irregular connective tissue, round and lls in spaces created by irregular lumen shape, contains glands. Muscularis externa: 2 layers of smooth muscle, inner is circular, external is longitudinal. Adventitia: external layer of dense irregular connective tissue. Esophagus: distinctive star shaped lumen, very large structure (can"t see nuclei) Mucosa: strati ed squamous epithelium, lamina propria and musculairs mucosa. Submucosa: loose connective tissue, lls in the spaces around the star, lots of glands/lymphatic vessels. Muscularis externa: inner circular layer, outer longitudinal layer. Stomach: composed of the cardia, fundus, corpus and pyloris, endoderm derived (simple columnar epithelium), Muscoa: surface of lumen has smoothened appearance, thick w/ dark/light banding patterns, contains tubular glands.
