ANP 1107 Chapter Notes - Chapter 1: Appendicitis, G Cell, Porta Hepatis

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1107
• Professor: Jackie Carnegie

Document Summary

Digestive system: takes food, breaks it down into nutrient molecules to obsorb into bloodstream, then grids the body of indigestible remains. Digestive system organs fall into 2 categories =alimentary canal and accessory digestive organs. Alimentary canal/gastrointestinal (gi) tract: continuous muscular tube from mouth to anusl digests food/breaks down into smaller fragments and absorbs it through its linings into blood; organs=mouth, pharynx, esophagus, stomach, small intestines, and large intestine (leads to anus); 9m/30f long in cadaver but shorter in living=muscle tone; food considered outside of body=canal is open to external environments at both ends. Accessory digestive organs: produce secretion that help break down food; teeth and tongue (in mouth/oral cavity) and gallbladder, and large digestive glands like salivary glands, liver, and pancreas (outside gi tract connected by ducts). Digestive process: segmentation + peristalsis=automatic; involves pacemaker cells + local reflex arc between enteric neurons. Processing food has 6 essential steps: propulsion: peristalsis (involuntary; major means) and swallowing (voluntarily) move food through.