BIOS 256 Lab 1 Assignment

BIOS 256 Lab 1 Assignment Part A. Reviewing Your Knowledge pg. 593-596 A. LAYERS OF THE GASTROINTESTINAL TRACT Name the layers of the GI tract that are described. The layer that contracts to churn food or move food along Layer consisting of a membrane that lines a body cavity that opens to the exterior; overlays smooth muscle Areolar connective tissue layer located deep to the mucosa. A serous membrane that is the external layer of a GI tract organ. B. GASTROINTESTINAL TRACT ORGANS Write the name of the term that is described. Its only function is propulsion. A continuous digestive tube from the mouth to the anus. Conducts both air and food. Primary site of nutrient absorption; is composed of 3 sections. Section of small intestine that receives bile, pancreatic secretions, and food from the stomach. Churns food and begins protein digestion. Has two sphincters that control elimination of feces from the body. Has regions called the cardia, fundus, body, and pylorus. Has regions called the cecum, colon, rectum, and anal canal.