252_practice_3

252_practice_3 - Human Physiological Anatomy II MVSC 252...

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Human Physiological Anatomy II April 28, 2006 MVSC 252 Exam 3 Test Code: ________ Instructions: There are 48 multiple choice questions, each worth 2.5 points, for a total of 120 points. Make sure you have the entire exam before you begin. Remember to put your name and TEST CODE on your answer sheet. Multiple Choice. Choose the one best word or phrase which answers the question or completes the statement. Place these answers on the SCANTRON. At the end of the exam turn in your scantron in the box for your test code at the front of the room. 1) Which of the following statements is TRUE? A) Parasympathetic stimulation increases the volume of watery saliva released. B) Sympathetic stimulation improves the taste of foods. C) Sympathetic stimulation eliminates soft palate and uvula elevation during swallowing. D) The larynx is depressed (lowered) during the pharyngeal phase of swallowing. E) The oral (buccal) phase of swallowing is involuntary. 2) Which of the following is a CORRECT match? A) endocrine cells of stomach - enteric gastrin B) parietal cells - HCl (hydrochloric acid) C) chief cells - gastrin D) mucous cells - intrinsic factor E) duodenal endocrine cells - bile 3) Which of the following would cause the pyloric sphincter to close? A) pH of chyme in duodenum > 3.0 B) parasympathetic stimulation C) sympathetic stimulation D) putting the first bite of food into your mouth E) mass movements of the colon 1
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4) If the pH of the chyme in the lumen of the duodenum is < 3.0, what will occur? I. CCK (cholecystokinin) will be released from the duodenum II. enteric gastrin will be released from the duodenum III. secretin will be released from the duodenum IV. gastric motility (contractions) will increase A) I, II, and III only B) I and III only C) II and IV only D) IV only E) I, II, III, and IV 5) Which hormone is PRIMARILY responsible for causing gallbladder contractions? A) cholecystokinin (CCK) B) secretin C) gastrin D) histamine E) enteric gastrin 6) The liver performs all of the following functions EXCEPT: A) produces bile B) detoxifies drugs and alcohol C) synthesis of various proteins D) storage of nutrients absorbed from the small intestine E) absorbtion of large amounts of water for storage 7) When food is placed in your mouth: A) the sensation of the texture of food will be carried by cranial nerve XII B) a muscle spindle reflex will be activated in the medial and lateral pterygoids C) the sensation of taste will result in increased sympathetic stimulation of the salivary glands D) the amount of HCl secreted by the stomach will decrease E) the amount of bile produced by the liver will decrease 2
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8) Defecation: A) is under involuntary control only B) occurs prior to mass movement of colonic contents C) is a reflex involving the sacral spinal cord D) usually occurs within minutes after swallowing E) is initiated by distention of the sigmoid colon 9) Examples of the process of peristalsis include: I. mixing chyme with bile in the intestinal tract II. propelling chyme from the duodenum to the jejunum
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252_practice_3 - Human Physiological Anatomy II MVSC 252...

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