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Exam_4_'04 - "‘"-=\y BlOL 302 Spring 2004 Exam 4...

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Unformatted text preview: "‘"'---=. \y BlOL 302 Spring 2004 Exam 4 Pink page30f5 THlS EXAM HAS 40 QUESTIONS ON 5 PAGES. PLEASE CHECK NOW TO SEE THAT YOU HAVE ALL 5 PAGES! ++ SENTENCE COMPLETION H- In this group of questions, select the answer choice that best completes the statement or best answers the question. Use the diagram below for questions 1 and 2. It shows the changes in heart rate before, during, and alter- a period of exercise. ii: clI’.§|!.‘larllinIOI-I-QIIAT-I" ruul-Uu-pmt —|-:-c -3v)*‘ 1. Heart rate changes in the region ofthe curve indicated by #l are due to which ofthe following factors? A. Buildup of lactic acid in the blood. (E) Actifation ofproprioceptors. C. Increasing body temperature. D. Decreasing blood pH. E. Stretching of the heart. Heart rate changes in the region of the curve indicated by the #2 are due to which of the following factors? ® Blood levels of epinephrine and norepinephrine are decreasing. Blood pH is decreasing. Proprioceptors are sending inhibitory signals to the cardiovascular centers in the medulla. Skin temperature is increasing. Please do not bubble this answer! B. C. P753 3. A Biology 302 student has found amicrosoopc slide with a torn label. The partial label reads, “Digestive Series.” She looks at the slide and makes the following observations: There is simple columnar epithelium. Leaf-shaped villi are present. There are a few goblet cells present. Light purple-staining glands in the submucosa containing simple cuboidal cells. FPS"? What part of the GI tract is on the slide? ileum Which of thel following anatomical features are found 9m: in the large intestine? circular folds haustra , " taenin coli P'Ptfltdr‘ 5; Intbesmall ihtestine,_increasefiiesurfi1eearm 4-K for absorption and are most frequent in the _. .gS-T-VA- B. AC 5 6. Which of the following are salivary glands? )( parotid and subpalatial ,stublingual and subpalariaI _. {CL submandibular and parotid Y subpalatial and submandibular E. Do not choose this answer. circulal folds; duodenum circular folds; ileum rugae; duodenum villi; ileum villi; jejunum BIOL 302 Spring 2004 Exam 4 Pink page 4 of 5 7. The contents of the gastrointestinal tract 1 l. The four principal layers of the GI tract in follow which of the following routes? order fi'orn deep to superficial are . l. transverse colon 2. descending colon ’5 3. ileocecal valve ‘ 4 sigmoid colon 5 ascending colon A. Z—zliS—y4—23 . 3—»4—>5—+1—>2 3-25—zl—>_Z«->_4 .4fi5fi2fi143 E. 5-21—{2—23631 8. Bile follows which of the following pathways? $ 1. canaliculi Jr hepatic portal vein ‘3 .| 2’ u mucosa, submucosa, muscularis, serosa = ' ‘ T h T l) S '. mucosa, submucosa, lamina propria, muscular-is “ C 5 . epithelial, lamina propria, muscularis 3%,}17 02+ ' mucosa, semsa L—f D. epithelial, museularis, submucosa, lamina propria E. mucosa, lamina propria. submucosa, muscularis 12. Which of the following are physiological adaptations to long-term exercise? 21: increased resting heart rate diecreased blood cholesterol level X 3.‘ increased heart size (lih ‘7 \ 3. hepatocytes . T'. decreased02consumption 4. sinusoid fl) increased resting metabolicrate O) . centralveia " v’ 6. commonhepaticduct X1,3,4,5 Y 1,3,4 C‘ «4,3,1; 2.14.5 ,ar‘z,3,1,6 .2,35 __.- 7 XMAS .34’s 7 .— ‘ @3,1,6 ’2’ ’ ’ . . - , k’ “(15’6 13.1‘heanticipatoryincreaseinhem‘tratethatocculs l 9. All of the following statements regarding the before exercise starts is regulated by . -. esophagusmdanalcanalaretmeEXCEPT: A. firehy'pothalamus ,, ,,,, ‘® The esophagus and anal canal contain many goblet cells that secrete mucus to lubricate the bolus and feces respectively. fl The esophagus and anal canal are lined B. changes in blood pH C. an increase in stimulation of the vagus nerves . inhibition of the adrenal medulla the limbic system with stratified squamous epithelium. C. The muscle fibers at the esophagus and anal canal form sphincters that close 41/ The muscularis of the esophagus and anal canal contains regions of skeletal muscle. ”E.’ Please, do not bubble this answer! 10. During submaximal exercise, the overall the distal ends of l4. Bnumcr’s glands — and are adistinctiver 77* histological characteristic of the . Off the opening. . are clusters of enteroendocrine cells; stomach secretions raise the pH of the chyme; duodenum . secretions have no known fimction; jejunum D. are mucus~secreting glands; cecum E. are lymph nodes; ileum systemic vascular resistance (SVR) typically and cardiac output __. This results in 15- From the esophagus, food goes through the four an overall in blood pressure. parts of the stomach in the following order _. Araremains the same. increases; increase i. body, omentum, cardia, fundus 237' increases, increases; increase a cardia, fundns, body, pylorus .12.. increases, decreases; decrease ' . cartlia1 hausna, pyloms, omenturn D. decreases, decreases; decrease _D.’ fundus, body, pyloms, cardia (EB decreases increases; increase E haustra, fundus, body, pylorus BIOL 302 Spring 2004 Exam 4 Pink page 3 of 5 16. Which of the following is TRUE of the small 21. Intrinsic factor, secreted by _ of the intestine? stomach, is required for— X Carbohydrates and proteins but not fats ' A. palietal cells, absorption of vitamin K are enzymatically digested here. . chief cells, absorption of vitamin K ,B.’ Carbohydrate digestion begins here. C.- parietal cells, absorption of vitamin B12 Most water absorption occurs here. D. G cells, absorption of vitamin C D. all of the above E. chief cells, absorption of vitamin C B. only A and C 22. Put the following events of fat digestion, 17. An example of something that happens during the absorption, and metabolism in correct order, gastric phase of gastric digestion would be starting with eating fatty food. JCT secretion ofgastricjuice in response to l. Pancreatic lipase splits triglycerides into smelling pizza free fatty acids and monoglycerides. ‘B. secretion of pancreatic enzymes in 2. Dictm'y fats in blood enter an artery. response to cholecystokinin 3 Chylomicrons are synthesized. 23’ inhibition of the stomach by distention 4. Fatty acids diffuse through microvilli of the small intestine into cells of the small intestine. @ churning of chyme by the stomach in 5. Bile salts produce an emulsion of lipid response to gastrin release _ droplets. K salivating in response to the presence of 6. Dietary fats enter a lactaeal. 1 foodinthemouth ' l 1415' 3A1: @1.4,5,3,6,2 t 18. Proteins are broken down by pepsin to . 4, 5, 2, 3, 6, l C. 5,1, 3, 4, 6,2 ® peptides - (.4: D. 5, 1,4, 3, 6,2 . B. trypsin E. 4, 5, i,2,3,6 C. ti—dextrins ' D. all of the above are true 23. Acety] coenzyrne A is used to synthesize _. E. only A and C are true ® cholesterol and fatty acids 19. Low glycemic foods B. ketone bodies and glycogen . C. cholesterol and glycogen K A. causes a slow rise in blood sugar _ , D. pyruvic acid and glucose-G-phosphatc “B. do not stimulate neuropeptide Y ’ E. glucose-Gphosphate and ketone bodies ' fl causcadramatic risein insulin " all of the above are true 24. Saliva contains only A and B are true A. water 20. Signs and symptoms of liver disease would B. lysozyme include . . amylase all ofthe above are true POO? digestion 017me fOOdS B. only A and C are true reduced colloid osmotic pressure of the blood A. B. C. increased glomerular filtration rate Q all ofthe above E. only A and B .iuJfl—n" .. BIOL 302 Spling 2004 25. The function of l-IDLs is to . A. transport triglycerides from adipose cells to the liver /B.’ transport triglycerides from hepatocytes to adipose cells C. deliver cholesterol in blood to cells throughout the body so they can use it to repair their membranes and synthesize steroid hormones .pick up excess cholesterol from body cells and the blood and return it to the liver 26. Lipogenesis is stimulated by ____......_._ whet-ms lipolysis is stimulated by 67 insulin; epinephrine /B.’ epinephrine; insulin ,9 glucagon; epinephrine ,B.’ epinephrine; giucagons E. none of the above 27. The hormone cholystokinin (CCK) . 0 causes contaction ofthe gallbladder : . increases release of bicarbonate ions into pancreaticjuice C. enhances production of acidic gastric juice ' ,1)! slows absorption of lipids E. both A and C are true 28. In a room where the temperature is 70°- F .- (= 21 ° C) and the humidity is 190%, you % couldlo_sebodyheatby_. A . radiation only B. conduction only C. evaporation only C? conduction and radiation E. radiation, conduction, and evaporation 29. The muscle fibers lack the enzyme so it cannot release --~— A. phosphorylase, glucose B. phosphorylase, lactic acid [email protected] glucose D. phosphatase, lactic acid E. hexokinase, glucose Exam 4 Pink into the blood. page4of5 30. Celehrex works by A. inhibiting the COX 1 enzyme B. inhibiting the COX 2 enzyme C. preventing the formation of prostaglandins .19.“ all ofthe above aretrue @ both B and c are true 31. Identify the cells of the small intestine l. Paneth cells /2_’ Chiefcells K Parietal cells 4. Goblet cells 5. S cells 1, l .41 ,K ,3,4,5 B. 5 Z s3 a u - UIth-léb-J Pam 4, 32. Which hormone promotes gastric emptying by causing relaxation of the pyloric sphinclef? /- A. glucagon B. secretin C. CCK astrin ." . pepsin 33. Which combihation correctly pfirs a digestive enzyme with the organ that smthesizes it? A? pepsinfisalivary glands )1 sucrasejpancreas chymofi'ypsin; stomach E. maltose; salivaly glands 34. The la_rgest of the lipoprotein particles is the and it also has the . A. ehylomicron; highest density B. LDL; lowest density chylomicron; lowest density . LDL; highest density E. l-lDL; highest density BIOL 302 Spring 2004 35. An example of something that happens during the cephalic phase of digestion would be _. A. buffering of acids in the stomach lumen by food proteins B. secretion of pancreatic enzym in response to cholecystokinin C. inhibition of the stomach by distention of‘ the small intestine D. churning of chyrne by the stomach in response to gastr'm release (Iii) salivating in response to the smell of pizza. 36. Which of the following is NOT characteristic of the absormive state? A. storage of exogenous triglycerides in adipose cells —@ gluconeogenesis in hepatocytes C. packaging of triglycerides into VLDLs in hepatocytes D. uptake of amino acids imo muscle fibers for protein synthesis E. oxidation of glucose for ATP production in mitochondria 37. Lipitor acts to lower blood cholesterol level by _ A. reducing the enterohepatic circulation of cholesterol inhibiting the enzyme HMG CoA reductase C. increasing the amount of cholesterol excreted in the bile D. enhancing receptor—mediated endocytosis of LDL particles into body cells E. blocking LDL receptors on body cells 38. The reason fatty acids cannot be converted to glucose is because A. pyruvic acid cannot be convertedto acetyl CoA e acetyl CoA cannot be converted to pynrvic acid C. glycerol cannot be converted to glucose D. beta oxidation cannot take place E. both B and D Exam 4 Pink —+ pageSofS 39. Choose all that applies to Parietal cells have receptors for gash-in have-Cl‘ channels have receptors for CCK have HC03‘ICI‘ antiporter — l. 3.5 - 4. k 5, contain carbonic anhydrase , 34,5 s a .- .. N—‘_'-"-‘—‘ tel-bylaw screw Ull'JIU'I § xl” 40. Which of the following is NOT a correct efiector—response pair for what happens when negative feedback loops are triggered by 'a decrease in body temperature? -‘A. epinephrine fiorn adrenal medulla- ' creases rate of cellular metabolism . thyroid hormone from thyroid gland— increases metabolic rate blood vessels dilate—decreased loss of heat fi'om skin surface ,Bf skeletal muscles contract in a repetitive cycle—increased production of heat ...
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