PHGY 313 Lecture Notes - Mastication, Temporal Muscle, Diphyodont
17 Jul 2013
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Lecture 15 - the mouth, salivary glands, and the esophagus. To measure how much saliva a person produces a day: put a pre-weighed sponge in the mouth. Saliva is considered 1:1 for g:ml (essentially water: put suction cup over stenson"s duct so saliva collects there. A radioisotope is administered and should be taken up by the salivary acinar cells via cl- cotransporters. In sjogren syndrome the uptake is slow, has a low peak value, and prolonged excretory phase (uptake is measured using a geiger counter) Ant 2/3rd is vii, posterior 1/3rd is the ix. It provides continuous washing to stop bacterial growth (by destroying their cell walls, and by mechanical action. Immune functions it contains antibodies, sialoperoxidase, thiocyanate, lysozyme. Buffer acids since it"s alkaline at high flow rates. Prevents demineralization of teeth via calcium phosphate. Without it: dental caries, gum disease, mucosal ulceration and atrophy, infection, can"t use dentures well. Artificial saliva: saliveze, xialine 1 & 2.
