VII -Large intestine
Is composed of the, colons ( ascending , transverse , and descending) , rectum , appendix , cecum and anal canal .
Colon
Mucosa , presents no specialized folds . It is thicker than that of the small intestine .
Epithelium , simple columnar ep. , has goblet cells and columnar cells.
Lamina propria , the crypts of Lieberkuhn are longer than that of the small intestine .
Muscularis externa , is composed of the inner circular and outer longitudinal layers of smooth muscle .
Submucosa , resembles that of ileum.
Muscularis externa , is composed of the inner circular and outer longitudinal layers of smooth muscle . outer longitudinal smooth muscle is modified into teniae coli , three flat ribbons of longitudinally arranged smooth muscle , auerbach, s plexus occupies its position between the two layers .
Serosa , is posses both serosa and adventitia, serosa presents small , flat-filled pouches , the appendices epiploicae .