NATS 1610 Chapter Notes - Chapter 11: Hepatic Portal System, Lymphatic Vessel, Bile Acid
13 Apr 2014
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Document Summary
The digestive system is a long tube which food is broken down and from which the nutrients food contains are absorbed: this tract continues on to the anus and is called the gastrointestinal tract. When we eat, food advances in one direction, from the mouth through the pharynx, the esophagus, stomach, small intestine, large intestine (ends in the rectum, anal canal, and anus) The digestive tube have 4 layers (from the esophagus on the digestive tube wall has 4 layers) 1: submucosa (layer of connective tissue with blood and lymph vessels and nerve cells, smooth muscle usually two layers (one circling the tube other lengthwise, serosa very thin serous membrane. Sphincters: circular arrays of smooth muscles found in the junctions between sections in the. The digestive system"s part carries out five types of tasks: mechanical processing and motility: movements of various parts (ex. In your oral cavity food begins to be torn apart by chewing.
