PHYSIOLOGY4521552 EXANIINATION 2 Wednesday March 14 2001 INSTRUCTIONS This examinationconsistsof25 muitiple choicequestions Pleasepdnt your llAMland 8 DIGIT UB PERSON NUI BER cleady on the answer sheet Fill in correspondingcircleson the answersheet Pleasemark your answerscarefullyon the answersheetwith a 2 pencil IMPORTANT IF YOU ERA SE DO SO COMPLETELY Qf for eachquestion This examconsistsof5pages Thereis only glqbgqlg4llgl including this pageand a critique form There are5 questions Pleasecheck that your copy hasall pages All questionscarry equalweight rcad the questionscarefully will be postedat thc end of the exam You may keepthe examinationfor study Alttl in the glasscasenear Sherman102 Be sureto make a list ofyour answersbefore learine rheexamroonrso rhJrvou crn grrdeyourselfonthisex rm Ifyou believethat a questionis ambiguousor incoEectlykeyed pleasesubmlt your commentsON THE ATTACHED EXAMINATION CRITIOUE FORIM ard submit it to the instructor rt the n xt resularlv scheduledclass Be sureto lcgblylig4 y Lq4 I on the form as these will be retumed to you at a later date CHE ATING ON EXAI S In an elfofl to decreasethc tcmptationto cheat on hourly and ltnal examswe ask that you follow thi procedureslistedbelow L Keep your answersheetcoveredexceptwhen addingan enswer 2 When creatingyour own list ofanswers to checkagainstthe key pleasewrite small and be as discreteas possible I Please inform one of the instructors as soon as possible if you susPect someone is cheating Your commentswill be kept confidential 4 Rememberlhat accordingto Universirypoiicy a personsivine answersis equally as guilty as a personreceivinganswers 5 The ultimate penalty for cheatingis dismissal iom the University are ForOuestions l 10chooseanswer Al if al partsof thestalement TRUEandanswer 8 il anv partis FALSE to lowersurfacetensionin thelung 1 Alveolar typell cellsproducesurfactant q typeI cells andalsoserveasthesourceforalveolar Tota transectionofthespina cordatthe evelofc 7 cerVical abolishthe r r to occurbutessentjally vertebrae willpermitactiveinspifF tioJ cough Fru i ability of anindiMdualto ttd c f icit d Lt withpujmonary in an individual willdecreHse 3 Functional residual capacity in sos flblosisbecause lunocomPtlancp ry u t i r i to overat rest moreworkis required 4 Inthenormallungduringinspiration tension cometheelaslicfibersof thelungthansurfaEe Itr l i t 3 thatareusedto predict 5 Age sexandheiirhtarethe3 majorvariables of an individual lungvolumes andlungcapacities I in thenumberot pulmonary in PA02anda decrease 6 Botha decrease pulmonary resistance vascular willincrease capillaries for theditfusion of 02 aclossthealveolar capillary 7 Thedrivingpressure membrane is greaterthanthatfor C02becauseC02is lesssolublein the l 8 Redbloodcell productionin the bodyis regulatedby the Ca02 f i person withanemiaboththe 02 contentof the anerialblood Ca02 9 In a willdecrease and the 02 saturationof hemoglobin v in ihe tissuePo2of skeletalmuscleof as little a decrease 16 Durinq exercise of the02fromhemoglobin Hgcanextractupto one half i aszO mm il c j r i u i oo t i a i l lli o IiiL F i di dii ristberow decrease remainthe same l iU l r1 4 1 hv rr lt 9Y t tj 1 2 iVA andtheCO2production hyperventilates lf a normalpersonvoluntarily Vco2 remains will thesame thenthePaCO2 from100rlo200mmHg thenthe02contentof the lI thePa02increases anerialblood Ca02 will li will oi hemoglobin lf the pH of the blooddecreasesthenthe o2 saturation a t j Jr d r l lriir J 44 1n r f il 0dr Cl t parasympathetic nervous system PNS withan active 1 4 Inan individual on airwaysmoothmusclewjllgaqse receptors blockade of the muscarinic 4 i i r ifi to airwayresistance lf l j t i in l willcausethe bloodpH to 1 5 An increasein plasmaproteinconcentration Choosethe one BESTanswerfor questionsl6 25 16 Whichof the followingwouldyou not expect to find in a personwith emohvsema c A e an increasein FFIC a decreasein the FEVI FVCratio a decreasein the oxygendiffusingcapacityof the lung a decreasein lungcompliance ratios i e areasin the lunpwith low ventjlation perfusion decreasedVA Q is FALSEwithregardto the statements 17 Whichof thefollowing zoneairways conducting a fromthegobletcellsandthesubepithelial secretidns to thegellayeronthe mucousglandsbothcontribute surfaceof the airwavs b the sol layerdependson the movementof ionsand water tromthe ciliatedepithelialcells the ciliabeatin a e ndomfashionin all directions stimulation of the SNS will causerelaxationof aiMay smooth muscle boththe PNSandthe SNS regulatemucusproductionbythe glands subepithelial c d e 2 18 Whichot the followingwill causea decreasein the FEVI FVCratio decreased strength of theexpjratory muscles increased airwayresistance decreased lungcompliance 1dal ile onlya andb aretrue a b andc aretrue i 19 Whichof thetollowing witha standard canbemeasured spirometer filledwithair t 20 a b E di residualvolume t j inspiratory reservevolume functjonalresidualcapacity i totallungcapacity lf airflowto a smallareaof thelungwereblocked thenyouwouldexpect a b c d E pulmonary hypoxic vasoconstriction to occurin thatarea a bloodflowshuntto occurin thatarea pulmonary vascular resistance to increase in thatarea onlya andb aretrue a u il u u atc uue Inan areaof thelungin whichalveolar deadspaceoccurs youwould expectto seewhichof thefollowing 5 c e 22 a highVA Qratio r the possiblepresenceof a pulmonaryembolism an atrialseptaldefecl nh n i h ra trla Whichof the lollowingwill jncreasethe 02 difiusingcapacity DLoz of the lungduringexercise Y a vc l recruitment andexpansion ofalveoliS A recruitment of pulmonary capillaries an increase in PV02 onlya andb aretrue 3 ls FALSE statements regarding C02transport Whichof thefollowing 4 k n ta rr t c L d mostof theC02in thebloodis carriedin theformol HCot plyhe plasmaproteinsbutfertheH formedby the l combination of C02andH20in theblood L therapidformation of HC05in carbonic anhydrase catalyzes the red bloodcells hemoglobin servesto transportC02in the blood in boththeple sma andthered dissolved C02is transported bloodcells breathing Whichot thefollowing ivarethemajorfacto s thatregulate eitherdirectlyor indirectly duringrestingconditions a b c d e PaC02 DHof theCSF Pa02 onlya andb aretrue a b andc aretrue VA fromthelistbelowgiven ventilation Choosethecorrectthealveolar information lor an individual witha normallungandaverage thefollowing 10BPM 150pounds frequency of breathing weight Weig t 2 5liters totallungcapacity 6liters ir volume 3 liiers insoiratorv reserve i rJ a b