04_Lecture Notes_NPB 114

Represent final secretory rates not initial

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Unformatted text preview: ed 2. Modified later on f. Ion composition of saliva i. Plasma ion concentration ii. Secretory Rate 1. Compare low flow rates and high flow rates (of saliva) 2. Represent final secretory rates not initial 2 Lecture 4 July 5, 2012 Salivary Secretions – Pharynx and Esophagus – Swallowing iii. Modify saliva depending on the type of stimuli they receive 1. Ductal cells are presumed to modify saliva Ion pathways 3 Lecture 4 July 5, 2012 Salivary Secretions – Pharynx and Esophagus – Swallowing Lecture 4 iv. At low secretory rates 1. Initial saliva travels through ductal region a. Initial Saliva: saliva that is produced in the acinar region b. Modified v. At high flow rates 1. Travels through ductal region very fast and so they don’t’ get a chance to modify the saliva 2. See the graphs to see how the absorption/secretion rates of ions match 3. Not a perfect model 4. Bicarbonate that is really high along with chloride (Theory) a. High stimulatory b. Both are strongly stimulated to produce bicarbonate g. Food Stimuli i. Cephalic Phase of Secretion 1. Thinking, smelling, seeing, talking about ii. Oral Phase of Salivary Secretions 1. Chew food 2. Taste food 3. Don’t have to be exposed to real...
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This note was uploaded on 06/12/2013 for the course NPB 114 taught by Professor Bautista during the Summer '08 term at UC Davis.

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