ES 207 Lecture Notes - Lecture 4: Stratified Squamous Epithelium, Lesser Omentum, Greater Omentum
6 Nov 2018
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Functions: take in food, break down food, absorb digested materials, provide nutrients, eliminate waste. Digestive system is one large tube from mouth to anus plus the accessory organs. Mesenteries: connective tissue of organs in abdominal cavity. Lesser omentum: mesentery connecting lesser curvature of stomach to liver and diaphragm. Greater omentum: mesentery connecting greater curvature of stomach to transverse colon and posterior body wall. Salivary glands: produce saliva which contains enzymes (amylase) to breakdown carbohydrates into glucose, cleanse mouth, dissolve and moisten food. Amylase: salivary enzyme that breaks down carbohydrates. Lysozyme: salivary enzymes that are active against bacteria. Each tooth has crown, cusp, neck, root. Enamel is hard covering protects against abrasions. Cavities are breakdown of enamel by acids and bacteria. Produce saliva contains enzymes to breakdown food. Joins stomach at cardiac opening: occurs when gastric juices regurgitate into esophagus, caused by caffeine, smoking, or eating or drinking in excess.
