雨课堂学堂在线学堂云《Medical Physiology（温州医科）》单元测试考核答案

第1题ThephysicalandchemicalpropertiesofthenormalbodyenvironmentarealwaysintherangeofAfixedBrandomCabsolutelyconstantDrelativelystableEdrasticfluctuations第2题ThemostactivepartoffluidsfromallpartsofthebodyisAICFBtissuefluidCplasmaDlymphaticECSF第3题TheinternalenvironmentoftheorganismisAintracellularfluidBextracellularfluidCintracellularspaceDinterstitialspaceEblood第4题ConditionedreflexbelongstoApositivefeedbackregulatingBnegativefeedbackregulatingCautoregulationDfeedforwardcontrolEnoneofaboveistrue第5题ThebasicwayofNeuromodulationisAreflectionBreflectedfeedbackCfeedforwardDpositivefeedbackEnegativefeedback第6题Whenthebodyisinastateofemergency,secretionofepinephrineandnorepinephrinebelongstoAsystemichumoralregulationBlocalhumoralregulationCneuromodulationDautoregulationEneuro-humoralregulation正确答案：E第7题()belongstopositivefeedbackregulationAbloodcoagulationBantihypertensivereflexCtemperatureregulationDregulationofgastricacidityongastrichydrochloricacidsecretionEregulationofbloodcalciumconcentrationonPTHsecretion第8题Increasedinsulinsecretionaftermealscontributestothestabilizationofbloodsugarlevels,

andthisformofhormonalactionbelongstoAautocrineBhormonetelepathicCparacrineDneurosecretoryEautoregulation第9题FeedonfanciesbelongstoA

conditionedreflexesB

humoralregulationCunconditionedreflexesDautoregulation第10题Whenthemeanarterialpressurefluctuatesinacertainrange,thestabilizationoftherenalbloodflowbelongstoAconditionedreflexesBhumoralregulationCunconditionedreflexesDautoregulation第11题InsulinsecretedbyBcellswhichistolowerbloodsugarbelongstoA

conditionedreflexesBhumoralregulationCunconditionedreflexesDautoregulation第12题ThecharacteristicofneuromodulationisthatArapidreactionspeedBaccuraterangeofactionCshortdurationofaction;Dthemostimportantregulationmodeofthebody正确答案：ABDC第13题ThecharacteristicofhumoralregulationisthatAslowspeedBlongdurationCpreciseeffectDwiderangeofeffects正确答案：ABD第14题ThecharacteristicsofnegativefeedbackregulationareArepeatedinaclosedloopBfluctuatedCrepeataroundasetpointDmaintainbodyhomeostasis正确答案：ABCD第15题ThecharacteristicsofpositivefeedbackregulationareAproducesA"snowball"effectBusuallyworkslocallyandintheshorttermCThereisnoefficacyincorrectingdeviations.Dpathologicalconditionsoftenleadtoaviciouscircle正确答案：ABCD第16题WhichofthefollowingphysiologicalfunctionsbelongtonegativefeedbackcontrolATheriseofbloodsugarcausesthesecretionofinsulin.BExcessivegastricacidinhibitsthesecretionofgastricjuiceCIodinedeficiencyleadstogoiter.DIncreasedaldosteroneleadstodecreasedbloodK+正确答案：ABC第17题WhichofthefollowingphysiologicalprocesseshaspositivefeedbackregulationAurinationanddefecationreflexBNa+flowintheactionpotentialdepolarizationphaseofnervecellsCbloodcoagulationprocessDdeliveryprocess正确答案：ACDB第18题WhichofthefollowingstatementsaboutfeedforwardiscorrectAfeedforwardispredictiveBfeedforwardcontrolsometimesfailsCfeedforwardhasthecharacteristicsofhysteresisandfluctuationDfeedforwardinformationreachesthecontrolpartbeforethefeedbackinformation正确答案：ADB第1题TheindexusuallyusedtomeasurethelevelofexcitementofanorganizationisAThresholdpotentialBTimevalueCThresholdintensityDStimulusintensitychangerateEFrequencyofstimulation第2题Theprocessofskeletalmusclecellmembranepotentialchangingfrom-80mVto-30mViscalledAHyperpolarizationBDepolarizationCRepolarizationDDepolarizationEOvershoot第3题Underquietconditions,thecellmembraneismorepermeabletowhichions()AK+BNa+CCa2+DCl-EH+第4题WhentheK+equilibriumpotentialisreached,thecellmembrane()ATheK+concentrationgradientonbothsidesiszeroBTheK+concentrationontheoutsideishigherthantheinsideofthemembraneCThepotentialgradientonbothsidesiszeroDThenetoutflowofK+iszeroEThepotentialinsidethemembraneisrelativelypositivecomparedtotheoutsideofthemembrane第5题Thedescriptionoftheprincipleofneuronactionpotentialiscorrect()ATheconcentrationofNa+insidethecellishigherthanthatoutsidethemembraneBWhenthecellsarestimulatedandexcited,Na+channelsopentocauseNa+outflowCAlargeamountofNa+outflowmakesapositivepotentialoutsidethemembraneandanegativepotentialinsidethemembraneDWhentheequilibriumpotentialofNa+isreached,theoutflowofNa+stopsETheNa+channelisinactivated,theK+channelisfurtheropened,andtheactionpotentialnaturallydrops.正确答案：E第6题Themainpartofnervecellactionpotentialis()AThresholdpotentialBSpikepotentialCLocalpotentialDNegativeposteriorpotentialEPositiveposteriorpotential第7题Whenexcitedthroughtheneuro-skeletalmusclejunction,acetylcholinebindstothetwoα-subunitsoftheN2typecholinergicreceptorontheendplatemembrane,makingtheendplatemembrane()AIncreasedpermeabilitytoNa+andK+,hyperpolarizationoccursBIncreasedpermeabilitytoNa+andK+anddepolarizationoccursCPermeabilityincreasesonlyforK+,hyperpolarizationoccursDPermeabilityincreasesonlyforCa2+,depolarizationoccursEAcetylcholinepermeabilityincreases,hyperpolarizationoccurs第8题Thebasicstructuralandcontractilefunctionalunitsinskeletalmusclecellsare()AMyofibrilBMyocelesCMusclefiberDThickmusclefilamentEThinmusclefilament第9题Theblockingagentthatcanblocktheexcitatorytransmissionatthenerve-musclejunctionis()AAmericandartpoisonBpufferfishpoisonCtetraethylammoniumDatropineEverapamil第10题Regardingthecharacteristicsoflocalpotential,whichofthefollowingiswrong?()AThemagnitudeofthepotentialchangeswiththeintensityofthestimulusBcanbesummedCnorefractoryperiodDallornonephenomenaESpreadingintheformofelectrictension第11题ThesarcomerelengthcorrespondingtotheoptimalinitiallengthofskeletalmuscleisA0.75～1.0μmB1.0

～

1.5μmC1.5

～

2.0μmD2.0

～

2.2μmE2.5μmormore第12题Whenlowtemperature,hypoxiaormetabolicinhibitorsaffecttheNa+-K+pumpactivityofcells,itwillcause()ATherestingpotentialincreasesandtheamplitudeoftheactionpotentialdecreasesBTherestingpotentialdecreasesandtheamplitudeoftheactionpotentialincreasesCTherestingpotentialincreasesandtheamplitudeoftheactionpotentialincreasesDTherestingpotentialdecreasesandtheamplitudeoftheactionpotentialdecreasesENeitherrestingpotentialnoractionpotentialisaffectedQuestiontypeB第13题Renaltubulereabsorptionofaminoacidsbelongsto()ASimplediffusionBFacilitatediffusionCPrimaryactivetransshipmentDExocytosisESecondaryactivetransit正确答案：E第14题GastricmucosalwallcellssecreteH+()ASimplediffusionBFacilitatediffusionCPrimaryactivetransshipmentDExocytosisESecondaryactivetransit第15题Onthebasisofrestingpotential,thenegativevalueofmembranepotentialincreases,whichiscalled()APolarizationBDepolarizationCRepolarizationDHyperpolarizationEDepolarization第16题Theformationofrestingpotentialismainlydueto()AK+inflowBCl-inflowCNa+inflowDK+outflowECa2+influx第17题Excitementistransmittedthroughunmyelinatednervefibers()ALocalcurrentBJumpconductionCChemicaltransmissionDElectrictensionspreadEElectro-chemicaltransfer第18题Whentheintervalofcontinuousstimulationisgreaterthanthesystolicperiodandlessthanthesinglecontractionwhichofthefollowingwillappear()AAsinglecontractionBAseriesofsinglecontractionsCIncompleterigiditycontractionDCompletetoniccontractionENocontractionresponse第19题Therepolarizationphaseoftheactionpotentialofnervecells,theactivityoftheelectrogenicsodiumpumpcancausethemembranetotemporarilyhyperpolarize()ASpikeBThresholdpotentialCLocalexcitementDPost-depolarizationpotential(negativepost-potential)EPost-hyperpolarizationpotential(positivepost-potential)正确答案：E第20题Thebasicconditionforexcitementcausedbystimulationistodepolarizethemembranepotential()ASpikeBThresholdpotentialCLocalexcitementDPost-depolarizationpotential(negativepost-potential)EPost-hyperpolarizationpotential(positivepost-potential)章节测试第1题Thebody'sintracellularfluidisusuallyidenticaltothetissuefluid()ANa+concentrationBK+concentrationCCl-concentrationDcolloidosmoticpressureEtotalosmoticpressure正确答案：E第2题Thefluidvolumeandbloodvolumeofahealthyadultweighing50Kgarerespectively()A30Land2.5LB25Land2.5LC30Land4LD25Land3LE20Land4L第3题Thespecificgravityofwholebloodismainlydeterminedby()AplasmaproteincontentBosmoticpressureCredbloodcellcountDwhitebloodcellcountENaClconcentration第4题Whichofthefollowingisnotaphysiologicalfunctionofplasmaproteins()AtransportO2andCO2BbufferfunctionCparticipateinphysiologicalhemostasisDparticipateintheimmunefunctionofthebodyEmaintainplasmacolloidosmoticpressure第5题Plasmacrystalosmoticpressuremainlycomesfrom()AinorganicsaltsBglucoseCalbuminDNa+andCl-Efibrinogen第6题ThehighK+concentrationinplasmastoredatlowtemperatureforalongtimeisdueto()AhemolysisBsenescenceCerythrocytosisDlowglucosesupply.ENa+-K+pumpactivitydecreasedordisappeared正确答案：E第7题Themainfunctionofredbloodcellsis()AregulatebodytemperatureBtransporthormonesCtransportO2andCO2DmakebloodredEsupplyiron第8题Adecreaseintheratiooferythrocytesurfaceareatovolumemaycauseerythrocytes()AIncreaseindeformationBIncreaseinosmoticbrittlenessCIncreaseinsuspensionstabilityDdecreasedsedimentationrateEincreasedhemoglobincontent第9题Thecauseofmegaloblasticanemiainapatientaftermajorgastricresectionwastheimpairmentofabsorptionofthesubstance()AproteinBfolicacidCvitaminB12Dfate.iron第10题AspirininhibitsplateletaggregationandACTSmainlyon()AphospholipaseA2BthrombinsynthaseCthrombinDcyclooxygenaseEprostacyclinesynthase第11题Thrombocytopeniacausesplateletaggregationdisordersdueto()AGPIb/IX/VanomalyBvWFdeficiencyCGPIIb/IIIaanomalyDfibrinogendeficiencyECa2+deficiency第12题Thecommonpathwayofendogenousandexogenouscoagulationpathwaysbegins()AVBFVIIICFIXDFXEFXI第13题Thereasonwhythyroidsurgeryispronetobleedingisthatthethyroidglandcontainsmore()AplasmaactivatorBtissueactivatorCfibrinolyticenzymeDanti-fibrinolyticenzymeEfibrindegradationproduct第14题Whenredbloodcellscanonlybeagglutinatedbystandardanti-bserum,theirbloodtypeis()AOtypeBAtypeCBtypeDABtypeEUnabletodetermine第15题Theroleofplateletsinphysiologicalhemostasisis()AProvidephospholipidsurfaceforclottingfactors;BReleasefibrinogenCReleaseofvasoconstrictingsubstancesandvasoconstrictionDAdhesionandaggregationtoformplateletthrombus正确答案：ABCD第16题Whenthesmallbloodvesselsofnormalpeoplearedamaged,physiologichemostasisisrealizedthroughthefollowingprocesses()APlateletadhesiontothedamagedbloodvesselBPlateletaggregationtoformplateletthrombusCSmallbloodvesselsareconstrictedbyplateletsthatreleaseserotoninDformabloodclot正确答案：ABCD第17题Thereasonwhynormalblooddoesnotclotinthebloodvesselsisthat()AfastbloodflowBsmoothandcompletevascularintimaCfunctionoffibrinolysissystemDpresenceofnaturalanticoagulants正确答案：ABCD第18题Invitro,therearefactorsthatdelaycoagulationoranticoagulation()AaddheparintothebloodBaddpotassiumoxalateorammoniumoxalatetothebloodCaddwarfarintothebloodDcooldownappropriately正确答案：ABCD第19题Therearewaystoacceleratebloodclotting()AVitaminKinjectionbeforesurgeryBHeparininjectionCapplywarmsalinegauzetostopbleedingduringsurgeryDincreasingtheconcentrationofCa2+intheblood正确答案：ACD第20题Whichofthefollowingconditionscanacceleratebloodsedimentation()ARedbloodcellsofpatientswithacceleratedsedimentationwereimplantedintonormalplasmaBIncreasedfibrinogeninthebloodCincreasedalbumininthebloodDincreasedglobulinintheblood正确答案：BD章节测试第1题Inwhichoneofthefollowingperiods,ventricularpressureincreasefastest?()ArapidfillingperiodBrapidejectionperiodCisovolumiccontractionperiodDreducedejectionphaseEdecreasedfillingphase第2题Whenheartrateislessthan40beats/min,thecardiacoutputdecreased.Thisisdueto()AreducedmyocardialcontractilityBinadequatecardiacreliefCinadequateventricularfillingDventricularfillingisclosetothelimitEejectionreduction第3题Aorticvalveclosurebeginsat()AatthebeginningofisovolumiccontractionphaseBatthebeginningofisovolumicrelaxationphaseCattheendofisovolumicrelaxationphaseDatthebeginningofrapidfillingphaseEatthebeginningofrapidejection第4题Thefirstcardiacsoundismainlyproducedby()Aatrialcontraction,openingofatrioventricularvalveBVibrationcausedbyventricularrelaxationCVentricularcontractionandatrioventricularvalveclosurecausevibrationofventricularbloodandventricularwallDVibrationcausedbytheclosureofthearterialvalveduringrelaxationofventriclesEVibrationcausedbybloodimpingingontheaorticvalve第5题Thecardiacindexisequalto()AStrokeoutputbodysurfaceareaBStrokeoutput/bodysurfaceareaCcardiacoutputbodysurfaceareaD(heartratebodysurfacearea)/cardiacoutputE(heartratestrokevolume)/bodysurfacearea正确答案：E第6题Ectopicautoregulationregulatesthepumpingfunctionoftheheartbychanging()AaveragearterialpressureBheartratereserveCheartreserveDventricularend-systolicvolumeEventricularend-diastolicvolume正确答案：E第7题Thecardiacfunctioncurveofpatientswithheartfailureislocatedin______ofthenormalcardiacfunctioncurve()AlowerleftBupperleftCleftDrightElowerright正确答案：E第8题Theplateauofventricularmyocyteactionpotentialistheresultof_____transmembraneflow()ANa+inflow,Cl-outflowBNa+inflow,Ca2+outflowCc2+inflow,K+outflowDK+inflow,Ca2+outflowENa+inflow,Cl-inflow第9题Thereasonforthecompensationlullafterpretermcontractionisthat()AdelayedreleaseofrhythmicexcitationinthesinoatrialnodeBTherhythmicexcitabilityofthesinoatrialnodeislessthanonceCTherateofrhythmicexcitatoryeffluxofthesinoatrialnodeisgreatlysloweddownDTheeffectiverefractoryperiodofpretermcontractionisparticularlylongEArhythmicexcitationofthesinoatrialnodefallswithintheeffectivedurationoftheprephasicexcitation正确答案：E第10题Whenthemembranepotentialofventricularmyocytesdepolarizedfromrestingleveltothresholdpotentiallevel,theNa+channelwasat()ArestingstateBstandbystateCactivatedstateDinactivatedstateEnoneoftheabove第11题Thefactorthatcanreducemyocardialexcitabilityis()ATheabsolutevalueofrestingpotentialincreases;BTheabsolutevalueofrestingpotentialdecreasesCTheabsolutevalueofthresholdpotentialincreases.DNa+channelisinthestandbystateEIncreasedbloodpotassiumconcentration第12题Patientswithrightheartfailureareoftenaccompaniedby()AdecreasedjugularpressureBincreasedcentralvenouspressureCpulmonaryedemaDincreasedvenousreturnEdecreasedcapillarybloodpressure第13题ThemajorfactoraffectingdiastolicpressureisAcardiacoutputBelasticityofthewalloftheaortaCcirculatingbloodvolumeDperipheralresistanceEstrokevolume第14题ThesubstancethatcausesthealternateopeningofcapillariesiscAtransmitterBhormoneChistamineDlocalmetaboliteEkinin第15题PatientswithleftheartfailureshowsignsofrightheartfailureAPulmonarycongestioncontinuestoexistBPulmonaryedemacontinuestoexistCReducedpulmonarycongestionDPulmonarycongestioncombinedwithsystemiccongestionEPulmonarycirculationandsystemiccirculationreturntonormal第16题DuringtheisovolumiccontractionperiodABoththehalf-moonvalveandtheatrioventricularvalveareclosedBTheindoorpressurerisessharplyCTheventricularvolumeremainsunchangedDTheindoorpressureremainsunchanged正确答案：ABC第17题ThemaincharacteristicsofventricularmyocyteactionpotentialdifferentfromskeletalmusclecellsareALongdurationofactionpotentialBThereisaclearplateauCLongeffectiverefractoryperiodDAsymmetryofrisingandfallingbranchesofactionpotential正确答案：ABD第18题Regardingthebioelectricalactivityofsinusnodecells,thecorrectoneisAPhase0depolarizationspeedisslowerBPhase4automaticdepolarizationspeedisfasterCNoobviousrepolarizationphase1andplateauphaseDPhase0isformedbyNa+influx正确答案：ABC第19题TheeffectofcatecholamineonmyocardialbioelectricactivityAIncreasetheCa2+influxofphase0oftheslowresponseactionpotentialBStrengthentheautodepolarizationrateofphase4autonomiccellsCSlowdowntherepolarizationphaseK+outflowDSlowdowntherisespeedoffastresponseactionpotential正确答案：AB第20题Asthemainfactorthatdeterminesthesizeofthepre-ventricularload,thevenousbloodvolume,thefollowingstatementiscorrectAThehigherthecomplianceoftheventricle,thebettertheventricularfilling,andthemorevenousbloodflowBThefastertheCa2+droprateduringdiastole,thefasterthemyocardialdiastolicrate,andthestrongertheroleofventricularnegativepressuresuction;CThepressureinthepericardialcavityincreases,theventricularfillingislimited,andtheamountofvenousreturntotheheartdecreasesDThehighertheatrialpressure,thefasterthevenousreturnspeed,sothemorevenousbloodflowback正确答案：ACB章节测试第1题Inwhichofthefollowingphases,thepulmonarypressureishigherthanatmosphericpressure?()AexpirationtimeBendofinspirationCendofexpirationDinhaletimeEbreathewhenpausedandtheairwayisclear第2题Innerbreathingmeans()ACO2inpulmonarycapillariesflowintothealveoliBgasexchangebetweentissuecellsandcapillarybloodCgasexchangebetweenlungcapillariesandenvironmentDO2inalveoliflowintothepulmonarycapillariesEArterialbloodinthepulmonaryveinsenterstheleftatrium第3题Thenecessaryconditiontomaintainnegativepressureinthepleuralcavityis()AThereissomeresistanceintherespiratorytractBThepleuralcavityisclosedCAsmallamountoffluidinthepleuralcavityDInspiratorymusclecontractionEIntrapulmonarypressureislowerthanatmosphericpressure第4题Transpulmonarypressurerefersto()AdifferencebetweenlungpressureandatmosphericpressureBdifferencebetweenintrapulmonarypressureandintrapleuralpressureCdifferencebetweenatmosphericpressureandintrapleuralpressureDdifferencebetweenatmosphericpressureandthoracicretractionEdifferencebetweenatmosphericpressureandlungretraction第5题Whichofthefollowingaboutintrapleuralpressureiscorrect()AThereisasmallamountofgasinthecavityBWhenexhaling,intrapleuralpressureequalsatmosphericpressureCWheninhalinghard,intrapleuralpressureispositiveDTheamountofintrapleuralpressureisdeterminedbytheforceoflungretractionEIntrapleuralpressureisnegativewhenpneumothorax第6题Thenegativepressureintheintrapleuralcavityisformedby()Aatmosphericpressure-inelasticresistanceBatmosphericpressure+transpulmonarypressureCintrapulmonarypressure+transthoracicwallpressureDatmosphericpressure-pulmonaryretractionpressureEatmosphericpressure+pulmonaryretractionpressure第7题Theretractionforceofthelungmainlycomesfrom()AalveolarelasticfibersBsurfacetensionofliquidmolecularlayerofalveoliCnegativechestpressureDthoracicelasticretractionEalveolarsurfactant第8题Bywhichcellsinthelungpulmonarysurfactantissynthesizedandsecreted?()AalveoliⅠepithelialcellsBalveoliⅡepithelialcellsCairwayepithelialcellsDlungfibroblastEalveolarmacrophage第9题Theindextomeasurethepotentialoflungventilationfunctionis()APulmonaryventilationBAlveolarventilationCForcedvitalcapacityD1secondforcedexpiratoryvolumeEVentilationreservepercentage正确答案：E第10题Amongthefollowingpulmonarycapacities,themostsignificantdecreaseinpatientswithsevereasthmais()AforcedexpiratoryvolumeBvitalcapacityCforcedexpiratoryvolumeattheendof1secondDinspiratorycapacityEexpiratorycapacity第11题Inwhichofthefollowingsituationswilltheventilation/perfusionratioincrease?()ApulmonaryedemaBemphysemaCasthmaattackDpulmonaryFibrosisEpulmonarycapillaryocclusion正确答案：E第12题Theoxygendissociationcurveshiftsfromthenormalpositiontotheleft()AItshowsthatthebloodoxygencontentdecreasesatacertainoxygenpartialpressureBCanoccurwhenanemiaCindicatesthattheoxygencontentfromthebloodintothetissueincreasesDVisibleinbloodstoredforseveralweeksEVisiblewhentissuemetabolismincreases第13题Whichofthefollowingaboutventilation/perfusionratioiswrong?()Anormalvalueinquietstateis0.84Bdecreasingofventilation/perfusionratiomeansthatthealveolarineffectivecavityincreasesCApexratiocomparebigDratioinpulmonarybottomissmallestEinpulmonaryembolism,theratioincreases第14题Theeffectivestimulustoenhancepulmonaryventilationbyexcitingcentralchemoreceptorsis()AincreasedconcentrationofcerebrospinalfluidH+BincreasedpartialpressureofcerebrospinalfluidCO2CdecreasedO2partialpressureofcerebrospinalfluidDincreasedH+concentrationofarterialbloodEdecreasedO2partialpressureofarterialblood第15题ThestimulationofrespirationwhenthepartialpressureofCO2inthebloodisincreasedismainlyachievedbywhichofthefollowing()ADirectlystimulatecentralrespiratoryneuronsBStimulatecentralchemoreceptorCStimulatecarotidbodyandaorticbodyreceptorsDStimulatecarotidsinusandaorticarchreceptorsEStimulatecardiorespiratoryreceptorsFStimulatecardiorespiratoryreceptors第16题Apatientwithpulmonaryheartdiseasehasasignificantdecreaseinarterialbloodoxygenpartialpressure.Thepatientwasinhaledwithpureoxygenbutcausedapnea.Themainreasonis()AReducedsensitivityofperipheralchemoreceptorsBRemovedhypoxicstimulationofperipheralchemoreceptorsCDecreasedsensitivityofcentralchemoreceptorsDLackofCO2stimulationofcentralchemoreceptorsETherespiratorycenterlosesitsresponsivenesstostimuli第17题Undernormalcircumstances,theeffectivestimulustomaintaintheexcitabilityoftherespiratorycenteris()AAfferentimpulseoflungstretchreceptorsBAfferentimpulseofrespiratorymuscleproprioceptorsCO2deficiencytoacertainextentDPCO2leveltoacertainextentEHighconcentrationofCO2第18题ThehighestCO2partialpressureinthebodyis()ACapillarybloodBIntracellularfluidCTissuefluidDArterialbloodEVenousblood章节测试第1题Whichofthefollowingdescriptionabouttheelectrophysiologicalcharacteristicsofgastrointestinalsmoothmuscleiswrong?()ATherestingpotentialismainlyformedbytheequilibriumpotentialofK+BTherestingpotentialamplitudeislowerthanthatofskeletalmuscleCslowwavepotentialoriginatesfromCajajstromalcellsDthegenerationofactionpotentialisrelatedtoNa+influxESlowwavefrequencyplaysadecisiveroleintherhythmofsmoothmusclecontraction正确答案：E第2题What'swrongabouttheroleofsaliva?()AmoistfoodandmakeiteasytoswallowBdissolvefood,causetastesensationCbreakdownstarchintoglucoseDkillbacteriaandviruses,soastocleanandprotectthemouthEexcretesomeheavymetals,cyanide,andrabiesvirus第3题Whichofthefollowingstatementabouttheloweresophagealsphincter()iswrong?()AThisareaisafunctionalsphincterBThepressureinitis5-10mmhghigherthanthatinthestomachCreflexivedilationoffoodasitpassesfromthemouthtotheesophagusDexcessivedrinkingandsmokingcanincreaseLEStensionEPreventgastriccontentsfromenteringtheesophagusagainstreflux正确答案：ED第4题Whichofthefollowingstatementaboutpepsiniswrong?()AThesynthesisandsecretionbythemaincellisinthestateofproenzymeBpepsinogencanbeactivatedbyhydrochloricacidCTheproteinisonlydecomposedintofreeaminoacidsDTheoptimalpHforitsfunctionis1.8-3.5EWhenPHexceeds5,irreversibledegenerationwilloccur第5题Whichofthefollowingaboutthecharacteristicsofgastricjuicesecretioncausedbydirectinjectionofproteinfoodintothestomachisright?()Ahighacidity,butlowproteasecontentBhighacidity,highpepsincontentClowacidity,highpepsincontentDlowacidity,lowpepsincontentElowacidityandmucus第6题Themainmechanismbywhichacidchymeentersthesmallintestineandcausesthesecretionoflargeamountsofpancreaticjuiceis()AreleaseofgastrinbythemucosaofthesmallintestineBreleaseoftrypsinbythemucosaofthesmallintestineCthesmallintestinalmucosareleasescholecystokininDexcitationofvagusnerveEexcitationofsympathetic第7题Whichofthefollowingdoesnotbelongtobile?()AbilepigmentBbilesaltCcholesterolDsodiumbicarbonateElipase正确答案：E第8题Themainpartwhichabsorbnutrientsis()AoralcavityBstomachCsmallintestineDascendingcolonEtransversecolon第9题Severevomitingoccurringinpatientswithpyloricobstructionmaycause()AmetabolicalkalosisBrespiratoryalkalosisCmetabolicacidosisDmixedacidosisErespiratoryacidosis第10题WhichisthepartofactiveabsorptionofbilesaltandvitaminB12?()AduodenalintestineBjejunumCileumDcolonEstomach第11题Gastrointestinalhormonethatinhibitgastricacidsecretionis()AgastrinandcholecystokininBgastrinandcholecystokininCtrypsinandsomatostatinDmotilinandgastricinhibitorypeptideEtrypsinandgastricinhibitorypeptide正确答案：E第12题Duringcholecystography,tocheckthecontractionfunctionofthegallbladder,subjectswereaskedtoeatfriedeggsinoilforpromotion()AsynthesisofbilesaltsBsynthesisofcholesterolCexcitationofthevagusnerveDsecretionofcholecystokininEsecretionofgastrin第13题Generalcharacteristicsofthesmoothmuscleofthedigestivetractinclude()AacertaintensionBagreaterextensibilityCacertaindegreeofself-disciplineDsensitivetochemical,temperatureandstretchstimuli,butnottoelectricalstimuli正确答案：ABCD第14题Thedescriptionofthe"mucus-bicarbonatebarrier"ofthestomachiscorrect()AItiscomposedofmucusandHCO3-secretedbygastricmucosa.BThegastricmucosalsurfaceisinAneutraloralkalinestateCpreventgastricacidandpepsinfromattackinggastricmucosaDpromotepepsinactivation正确答案：ABC第15题Whichofthefollowingfactorscannotpromotegastricjuicesecretion()AHClBhistamineCexcitationofvagusnerv