The document summarizes key aspects of the digestive system, including: 1) It describes the general organization of the digestive tract into four layers - mucosa, submucosa, muscularis externa, and serosa. 2) It outlines the regions and functions of the small intestine - duodenum, jejunum, and ileum. Most absorption occurs in the small intestine. 3) It discusses the large intestine/colon and its regions - ascending, transverse, descending, and sigmoid colon. The colon has fewer villi and glands than the small intestine. 4) It briefly covers the liver, gallbladder, and pancreas - their locations, functions, histology

1. Ch 22: Digestive System, Part 2 Objectives: Discuss the general functions and anatomy of the digestive tract, including accessory structures. First, an overview of the tubular nature of the digestive system. Describe the individual organs of the system, including a discussion of the gross and microscopic anatomy.

2. General Organization of a Tubular Organ (Repetio est….)

15. Colorectal Polyps Generally benign Asymptomatic May bleed May be precancerous Virtual Colonoscopy http://www.youtube.com/watch?v=lQfuAP3YqPQ&feature=related