BIOL 2213 Study Guide - Final Guide: Portal Vein, Common Bile Duct, Common Hepatic Duct
29 Aug 2016
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Know the structure (anatomy) of the digestive system including accessory organs. Know the function of each structure and what secretions are produced there. 4 major functions of the digestive system: digestion, secretion, absorption, motility. Digestive system (aka alimentary canal: gastrointestinal tract (gi tract) Controlled by somatic nerves to skeletal muscles of mouth and. Rhythmic chewing motions are reflexively activated by pressure of food against gums, hard palate at roof of mouth, and tongue. Upper esophageal sphincter: a ring of skeletal muscle surrounds the esophagus just below the pharynx and forms it. Muscular movements travel in a wave-like fashion in one direction along the length of a part of the tract, a process called peristalsis. Luminal pressure in the pharynx at the opening to the esophagus is equal to atmospheric pressure, and the pressure at the opposite end of the esophagus in the stomach is slightly greater than atmospheric pressure.
