04_Lecture Notes_NPB 114

Any peristalsis after primary no tertiary or

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Unformatted text preview: contracts 2. Pulls larynx upwards and also forward 3. Proof a. Find Adam’s Apple b. Adam’s apple moves upwards and forwards in swallowing 4. Purpose 8 July 5, 2012 Salivary Secretions – Pharynx and Esophagus – Swallowing Lecture 4 ii. Voicebox/ Vocal cords contracted iii. Epiglottis will close iv. Pharyngeal Constrictors 1. Peristalsis 2. Close the lumen of the pharynx d. Esophageal phase i. Upper Esophageal Sphincter 1. Closes off tightly ii. Reinitiate Breathing iii. Persistalsis contraction 1. Primary peristalsis a. Contraction in proportion to size of esophagus b. Usually needed for something solid c. Require “Relaxation” that occurs in the esophagus i. Must be in front of the bolus ii. Referred to as Deglutitive inhibition d. Can be inhibited i. Gulping 1. Quick swallows 2. Very little time in between subsequent swallows 9 July 5, 2012 Salivary Secretions – Pharynx and Esophagus – Swallowing Lecture 4 3. <2 seconds ii. Last gulp can elicit primary peristalsis iv. Can also elicit Secondary Peristalsis 1. Any peristalsis after primary (no tertiary or quaternary peristalsis) 2. Occurs when something sticks to the inside of esophagus 3. Detected by sensory afferents a....
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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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