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GI Physiology

by: Mrs. Sierra Bailey
Mrs. Sierra Bailey
GPA 3.85

Erwin Bautista

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Erwin Bautista
Class Notes
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This 5 page Class Notes was uploaded by Mrs. Sierra Bailey on Tuesday September 8, 2015. The Class Notes belongs to NPB 114 at University of California - Davis taught by Erwin Bautista in Fall. Since its upload, it has received 68 views. For similar materials see /class/191813/npb-114-university-of-california-davis in Neurobiology,Physio & Behavior at University of California - Davis.


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Date Created: 09/08/15
NPB 114 Practice MT2 Matching 1 pt each 51 a Acinar cell Chief cell b Endocrine cell e Mucous cell c Parietal cell 1 Produces an alkaline fluid to protect the stomach 2 Its product is released into the bloodstream 3 Produces pepsinogen a Fundus d LES b Body Pyloric Sphincter c Antrum F 4 Stretchy upper portion of the stomach that accomodates food 5 Separates the duodenum from the stomach Multiple Choice 3 pts each 6 All phases of swallowing are initiated involuntarily EXCEPT for the phase a Oral d Gastric b Pharyngeal e None of the above c Esophageal 7 What can increase the force of contraction in the esophagus a Cold in the esophagus b Stretch in the esophageal smooth muscle c Stimulation of tongue touch receptors d Vagotomy e Two of the above increase the force of contraction 8 Contraction of the closes off the nasopharynx during swallowing a Lips d Inner pharyngeal set b Upper esophageal sphincter e Outer pharyngeal set c Levitators 9 lfthe nasopharynx were physically blocked what would be the consequence Air will be directed into the esophagus not the trachea We could NOT taste food Swallowing could NOT occur We could not breathe through the nose Two of the above would be consequences 09059 A toxin inhibits myosin light chain kinase In humans what region will be affected by the toxin a The stomach d The upper 13 of the esophagus b The tongue e The diaphragm c The oropharynx Suppose that a very long lag phase was observed following ingestion of food items What could be the reason The food items are a liquid The food items are large in diameter The consumer had a vagotomy The food items contain zero calories Two of the above are correct answers to this question 09059 You measured an intragastric pressure of 910 mm Hg in the proximal stomach of your patient What might be causing this pressure The antrum just relaxed Deglutative inhibition The patient hasjust swallowed a food load The patient had a vagotomy The gastric smooth muscle membrane potential is 45 mV 09059 What sensory modality is NOT detected by stomach afferents pH Temperature Pain Muscle stretch All of the above ARE detected by stomach afferents 09059 Which of the following gastric secretion is protective lntrinsic factor Hormones a Mucus d b Pepsinogen e c HCI In a stimulated parietal cell Proton pumps translocate to the membrane facing the bloodstream Protons move from the blood into the parietal cell The secretion is referred to as the quotnonparietal secretionquot Protons leave the cell via a HquotK pump 90 F75 Which relationship is TRUE rtsize of swallowed food bolus gt rt duration that oropharynx is closed rtcaloric content of stomach contents Egt gastric emptying rate NH in stomach contents Egt rtgastric emptying rate rtstretch of stomach wall due to food load gt 4 LES tone 90 F75 17 20 21 22 23 24 Your patient complains of significant dental erosion while he sleeps and a burning sensation in his chest following a fatrich meal You advise him that the symptoms may predispose him to develop a Scleroderma c Achalasia b Chagas39 Disease d Refluxdisease Which is NOT a feature of the fed motor activity of the stomach a A peristaltic wave that begins in the body and travels toward the pyloric sphincter b The contractions are phasic and intense c The pyloric sphincter is wide open d Retropulsion e Pyloric pumping Acid reflux into the esophagus has NOT be associated with Coffee Alcohol a Wearing loose clothing d b Heavy lifting e c Chocolate Rapid stomach emptying may be caused by a Pancreatic insufficiency d Idiopathic gastroparesis b Ltryptophan e GERD c Type I diabetes LES tone increases during respiratory inspiration because a The contraction is a type of mechanical digestion b It prevents reflux of stomach contents c You cannot swallow and breathe simultaneously d It prevents air from entering the esophagus The fed activity may be stimulated by a Proximal stomach stretch d Vagotomy b Fats in the duodenum e Duodenal stretch c Motilin The pyloric sphincter opens in response to a Motilin d CCK b Acid in the duodenum e Fat in the duodenum c Meal ingestion Which phase of the M MC exhibits strong rhythmic contractions a Phase I d All phases b Phase II e None ofthe phases c Phase III 25 26 27 28 29 30 3 x The MMC can be inhibited by a Fasting d Duodenal distension b Proximal stomach distension e Pyloric sphincter opening c otilin Which of the following events prevents food from entering the respiratory passages during swallowing a Peristalsis in the oropharnx d Closure of the larynx b Opening of the UES e Opening ofthe epiglottis c Closure ofthe LES The type of muscle that is completely seen in the stomach is a The longitudinal muscle layer d The circular muscle layer b The skeletal muscle layer e The cardiac muscle layer c The oblique muscle layer Which reaction requires ATP use in parietal cells a Movement of H across the apical membrane b Movement of water across the cell c Production of H from 002 and H2 0 d Production of H003 Which gastric secretion component decreases in concentration at high versus low secretory rates a H c K b Na d Cl39 A disease causes smooth muscle degeneration What may be observed in a patient with this disease An inability to chew Peristalsis in the upper 13 of the esophagus No peristalsis in the ton ue An inability to close the soft palate 90 F75 Which statement is FALSE Generally the esophagus is longer in males The UES is controlled via vagal pathways Gastric accommodation opens the LES The fed activity of the stomach involves peristalsis in the antrum During fasting the orad stomach muscle cells are at approx 45 mV 09059 21w in 13028 543 gt323 anzo ltgtOIZO A gtZmH m gtZmH m gtZmH A gtZmn m gtZmn TJgt UUJITI ltC1um DIG Om a gtZmH N gtZmH m gtZmH o gtZmH 40 gtZmH 3 gtZmH 4m gtZmH 4m gtZmH 3 gtZmH 4m gtZmH 5 gtZmH 4N gtZmH 4m gtZmH 6 gtZmH mo gtZmH m4 gtZmH mm gtZmH mm gtZmH MA gtZmH mm gtZmH ma gtZmH MN gtZmH mm gtZmH mm gtZmH mo gtZmH m4 gtZmH 003UJgtUUUJOJgtJgtUJJgtJgtOUUJUJgtITIOUJJgtUOUJJgt


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