Exam_4_'05

Exam_4_'05 - u-i Wt. 302 Spring 2005 Exam 4 Pink page 2 of...

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Unformatted text preview: u-i Wt. 302 Spring 2005 Exam 4 Pink page 2 of 6 ++ SENTENCE COMPLETiON ++ . The contains an abundance of circular folds and is the region of the gastrointestinal In this group of questions, "select the answer tract where most absorption occurs. choice that best completes the statement or . best answers the question. A. ileum stomach . :7? % ascending colon @ jejunum O Use the diagram below for questions 1 and 2. It ;. duodenum shows the changes in heart rate before, during, and after a bout of exercise. Refer to the figure below for questions 5 - 6. II, HI ID H-wl— -I-!-l-J-1-| O I 21 a ll ! I Ilolthl.2-3-l-§-I-!-l -‘ IIIlEtIliIMnI Heart rate changes in the region of the curve indicated by #1 are due to which of the following factors? A. Buildup of lactic acid in the blood. H—) B. Activation of proprioceptors. C. Cerebral cortex sending impulses to the cardiovascular centers in the medulla. D. all of the above @ only B and C 2. Bean rate changes in the region of the curve indicated by the #2 are due to which of the following factors? X Blood levels of epinephrine and 5. The spiral colon is indicated by the letter _____. norepinephrine are increasing. H B. Pmprioceptors are sending inhibitory A. A B. B C. C @ D E. E signals to the cardiovascular centers in the medulla. 6. Rugae function to __ and are found in the . Skin temperature is increasing. structure indicated by the letter ___,_. (’3 Blood pH is increasing. E. Please do not bubble this answer! A create segmentation , E B. increase surface area for absorption, B 3. What is the role of Kupffer cells? C. increase surface area for absorption, C D. allow for distention (or stretching) when 1‘5 A ‘ phagocytosis of bacteria and debris / full. C T' secretion of bile and bile salts allow for distention (or stretching) when G. secretion of cholecystokinin full. B . synthesis of insulin D E synthesis of cholesterol a}? a Spring 2005 J. Which of the following increase the surface area of the GI tract for absorption? 1. length of the tract circular folds villi microvilli P93!” 3: C? 8. A Biology 302 student has found a microscope slide with a torn label. The partial label reads, 1 2 B. 2.3 3.4 D. 2.3.4 1 2, 3,4 “Digestive Series." She observes the following: There is simple columnar epithelium. Finger—shaped villi are present. Numerous goblet cells present. Dark purple-staining lymph nodes are present in the submucosa. PP’PP What part of the GI tract is on the slide? (AK colon zB.’ stomach C. duodenum ileum )x esophagus @ Place the following in order from least number of goblet cells to most number of goblet cells in the mucosa. l. rectum . 2 duodenum 3. stomach 4. ileum ‘ 5 6 /=’.i ALL jejunum i anal canal a a . 3.5.2.4.6 3 2 5 41.6 E. 1.3.4 2 6 v y 10. Which ofthe following cause heart rate to increase during exercise? % increasing blood pH «'32. stimulation of proprioceptors --3. increasing body temperature -4 inhibition of impulses in the vagus nerve ,--5 secretion of hormones from the adrenal medulla Xl.2.3.4.5 /’13. 2.3.4.5 C. 2.3.5 .2.4.5 E 3. 5 Exam 4 Pink aw: 3.4.524, é’P‘T-ltlfio page 3 of 6 1 1. Which of the following anatomical features are found only in the small intestine? circular folds /2" haustra 1 ,31’ taenia coli /4./ rugae 5. villi M,2,3 X23 £7 1,3,4 gm [Er/3.4.5 ‘ 12. Secretions from Brunner's glands raise the pH of the chyme so pancreatic enzymes can function better . (contain mucus and digestive enzymes -’ protect the stomach from digesting itself /D'.’ are slightly acidic to improve the action of pancreatic enzymes ,5: contain HC] and NaCl 13. The anticipatory increase in ventilation prior to exercise is regulated primarily through . y the adrenal medulla 1B: the anticipated lack of oxygen to skeletal muscle ,2.’ proprioceptors sending impulses to the respiratory control centers of the medulla @1116 limbic system . the motor cortex 14. Which of the following regions of the gastrointestinal tract contain skeletal muscle? 1. arms ystomach X pyloric sphincter ,«4. esophagus j.’ ileocecal valve 6. rectum (IA;?1.4 . 1.2.3.4.5 l 6 _ E. 9 15. The limiting factor in submaximal and maximal exercise is A. ventilation rate B. the body’s ability to dissipate heat ? cardiac output . systemic vascular resistance E. A andC 3‘s: °® .IOL 302 Spring 2005 16. The conversion of amino acids and glycerol into glucose is called @glucoygggenesis . glycogenolysis C. glycogenesis D. transanimation E. cellularrespiration 17. The gall bladder . produces bile stores bile C. contracts and releases bile in response to secretin . contracts and releases bile in response to sympathetic stimulation E. both B and C are true 18. The hormones cortisol and glucagon stimulate /A./ lipogenesis B . glycogenolysis J"/synthesis of proteins gluconeogenesis . deamination 19. Which of these reactions take place in both aerobic and anaerobic respiration? leycolysis . citric acid cycle Mlectron transport chain /3/ lactic acid formation all of the above 20. An event that occurs during the intestinal phase of gastric digestion would be . % buffering of acids in the stomach lumen by food proteins B. secretion of pancreatic enzymes in _ response to gastrin @ inhibition of stomach emptying by distention of the small intestine /E./ churning of chyme by the stomach in response to gastrin release ,3? salivating in response to the smell of pizza Exam 4 Pink page 4 of 6 21. Which of these structures produces enzymes that digest carbohydrates? —-' A. salivary glands --B. pancreas " C. lining of the small intestine all of the above only A and B are true 22. Which of the following increases HCl production by the stomach? ,. A. gastrin histamine J E. acetylcholine all of the abow: E. only B and C 23. Which of these hormones stimulates stomach secretions? A. cholecystokjnin GIP @ gastrin . secretin E. None of the above 24. Which of the following is NOT a component of digestion in the stomach? .A./ secretion of gastric lipase into chyrne ,Br', secretion of mucus /Q./ an "alkaline tide” of bicarbonate ions entering the blood @emulsification of dietary fats by bile . secretion of hydrogen ions and chloride ions into chyme 25. The key molecule pyruvic acid can be convened to lactic acid can be converted to alanine can be convened to oxaloacetic acid @ all of the above are true . only A and B are true 26. Where are chylomicrons formed? X in goblet cells of the small intestine /B'.- in hepatocytes /€? in S cells . in mucosal epithelial cells of the small intestine ,E.’ in acinar cells of the pancreas 162 Spring 20:15 Exam 4 Pink page 5 of s 0 17. Which of the current cell types is not matched 33. Vasoconstriction is considered to be a heat— with its product? saving mechanism because __ ’ Surface mucous cells: mucus A. more heat is generated by friction as a @ .‘ Parietal cells: hydrochloric acid larger volume of blood is forced through . hief cells: intrinsic factor a smaller space . Endocrine cells: regulatory hormones B. the energy released by contraction of E. all of the above are correct vascular smooth muscle warms you up C. sweat glands don’t receive enough blood 28. Which of the following would be a prominent supply to produce sweat feature of metabolism during the absoggtive @ less heat can be conducted to the skirt state? surface and radiated away E. Please, do not bubble this answer! a A. uptake of amino acids into cells —— B. conversion of glucose to glycogen 34. Micelles are C. use of fatty acids for ATP production @ all of the above {Q1 lipids surrounded by bile salts only A and B J}: produced by the pancreas [9—) released into lacteals 29. Acetyl coenzyme A is used to synthesize __. stored in the gall bladder K reabsorbed in the colon Q cholesterol and fatty acids ,3.” ketone bodies and glycogen 35. The apoprotein apoC-Z of VLDLs activates the ET cholesterol and glycogen enzyme 1? pyruvic acid and glucose—é-phosphate E. glucose-fi-phosphate and ketone bodies A. pancreatic lipase endothelial lipOprotein lipase 9.1., XThe carbon dioxide you breathe out comes . ATP synthase from . D. HMG-CoA reductase E. hexokinase @ glycolysis ,B'.’ the electron transport chain XDentin . C. anaerobic respiration \QLDT the food you eat forms the surface of the crown of the E none of the above teeth IE”. holds the teeth to the periodontal ligament 31. Gastric peristalsis and gastric emptying are K is harder than enamel stimulated by all of the following, EXCEPT: .__~7D. makes up most of the structure of the teeth A. distention of the stomach /E.’ both C and D are true B. stimulation of the vagus nerve C. gastrin 37. Which of the following statements regarding D. increasing pH of gastric juice kilocalories is true? CE) cholecystokinin (CCK) ,Ae’ A kilocalorie is the amount of energy 32. The loss of heat resulting from the loss of required to raise the temp of lgm of water from the body's surface is . water by 1° C. ,B.’ there are 9 kcal in a gram of protein A. radiation ,9.” there are 4 Real in a gram of fat (39 evaporation a pound of body fat contains 3500 kcal C. conduction . All of the above are true D. convection E. none of the above aIOL 302 Spring 2005 38. Which of the following metabolic processes would be occurring to a significant extent during the fasting state? X formation of VLDLs B. insulin—stimulated uptake of glucose by muscle cells @lipolysis /B./ glycogenesis yformation of chylomicron remnants 39. The most potent hunger hormone is A. leptin a; ghrelin C. neuropeptideY D. insulin E. glucagon 40. The functicm of LDLs is to . /A/tran5port triglycerides from adipose cells to the liver Exam 4 Pink B. transport triglycerides from hepatocytes VLDL to adipose cells C. deliver cholesterol in blood to body cells so they can use it to repair their membranes Pr pick up excess cholesterol from body cells H51) L and the blood and return it to the liver (Er deliver dietary lipids to the liver C’er Oran page B of 6 ...
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Exam_4_'05 - u-i Wt. 302 Spring 2005 Exam 4 Pink page 2 of...

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