CAS BI 108 Study Guide - Quiz Guide: Gastric Lavage, Gastric Acid, Simple Columnar Epithelium
11 Nov 2016
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Document Summary
Digestive system: introduction, tube from mouth to anus, 30 ft. long. Cross section through the coelom (body cavity) and digestive tube: lumen = hollow opening of a duct or tube. Mucous membrane = absorption, secretion: columnar epithelium = stomach, small and large intestine, stratified squamous = non-keratinized, mouth esophagus, rectum. Submucosa: areolar connective tissue rich in blood vessels and nerve endings. Muscle: function - propel food and other materials through the tube: circular layer inner layer, longitudinal layer outer layer, transverse or oblique layer (in stomach only, visceral peritoneum - peritoneal layer of digestive tube. Buccal cavity: lips - orbicularis oris muscle (striated) covered layering to mucous membrane. Salivary glands: parotid, submandibular, sublingual, and minor glands, locations and function (secretion, saliva - mucin, water, salivary amylase. Pharynx: nasopharynx - above and behind soft palate, posterior nares, eustachian tubes, adenoids or pharyngeal tonsils.
