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1填空：1.Theconductionsystemoftheheartconsistsofthesinoatrial(SA)node,bundleofHis,,atrioventricular(AV)node,thebundlebranchesandPurkinjefibers.2.Therearetwobasicformsofpiezoresistivestraingauge：bondedandunbonded．3.Therespiratorysystemincludesthemouth；nose；trachea/windpipe；bronchii；andlungs.4.TheGI(Gastrointestinal)systemtakesinrawmaterialsintheformoffoodandliquidsandprocessesthemsothattheyareabsorbedintothebody．5.Thenervoussystemisessentialtothefunctioningofthehumanorganism,whichhasbeencomparedtoacomputerwithanelectricalcommunicationssystem．6.Thespinalcordisacomplexcableofnervesthatconnectsthebraintomostoftherestofthebody.7.WhereastheCNSisanelectricalcommunicationsandcontrolsystemwithinthebody,theendocrinesystemisachemicalcommunications／controlsystemandaidsintheregulationofinternalbodystates.8.Endocrineglandsproducehormones,chemicalsubstancesreleasedintothebloodstreamtoguidesuchprocessesasmetabolism,growth,andsexualdevelopment.9.Deoxygenatedbloodenterstherightsideoftheheartattherightatrium．Itisthenpumpedintotherightventricleandoutofthehearttothelungs.10.Bloodiscarriedawayfromtheheartinarteriesandisbroughtbacktotheheartinveins.11.Theupperchambersoftheheartareinputstothepumpsandarecalledatria．Thelowerchambersoftheheartarecalledventriclesandarethepumpoutputs．12.Bloodfromtheheadandarms，aswellastherestoftheupperportionofthebody,returnstotheheartthroughthesuperiorvenacava；bloodfromthelowerportionofthebodyreturnsthroughtheinferiorvenacava.13.Bloodleavestherightatriumthroughthetricuspidvalvetoentertheright2ventricle.14.Bloodpassesthroughthemitralvalvetotheleftventricle,andthenbackintothemainstreamofthecirculatorysystemviatheaorticvalve．15.Thecoronaryarteriessupplybloodtotheheartmuscle.16.Theheartisamusclethatisencasedinasaccalledthepericardium.17.Therearefourvalveswithinyourheart.Theyarethemitral,tricuspid,aortic,andpulmonicvalves.18.Theventricularcontractionisknownassystole.19.Theventricularrelaxationisknownasdiastole.20.ThemusclecellsoftheventriclesareactuallyexcitedbythePurkinjefibers.Theyarearrangedintwobundles,onebranchtotheleftandonetotheright.21.InventricularfibrillationthemajorfeaturesoftheECGdisappearandthewaveformtakesonalowamplitude,“jittery”appearance,indicatingthattheventriclesarenotcontractingbutonlyquivering.22.Thedelaylineintheheart’selectroconductionsystemiscalledAVnode,andthedelayisabout110ms.23.Bionelectrodesareaclassofsensorsthattransducerionicconductiontoelectronicconductionsothatthesignalcanbeprocessedinelectroniccircuits.24.Themicroelectrodeisanultrafinedevicethatisusedtomeasurebiopotentialsatthecellularlevel．25.Astraingaugeisaresistiveelementthatproducesachangeinitsresistanceproportionaltoallappliedmechanicalstrain．26.Threetypesofcommontemperaturetransducersarethermocouples,thermistors,andsolid-statePNjunctions.27.Athermistorisisatypeofresistorwithresistancevaryingaccordingtoitstemperature.28.Thecolorimeterisafilterphotometerthatmeasuresthecolorconcentrationofasubstanceinsolution.329.Theflamephotometermeasuresthecolorintensityofaflamethatissupportedbyoxygenandaspecificsubstance.30.ThemostcommoncauseofmovementartifactinECGrecordingiselectrocdeslippage.31.Theresistanceofastraingaugevariesdirectlyasthelengthandinverselyasthesquareofthecross-sectionalarea..32.Theabilitytomaintainaconstantinternalenvironmentinthebodyiscalledhomeostasis33.Thesemipermeablemembraneselectivelypermitsmaterialstopassbetweentheinsideofacellanditsexternalenvironment．34.Thethreetypesofmusclecellinthebodyarecardiac,smooth,andskeletal.35.Theskeletalsystemconsistsmostlyofbonesandsomecartilage．36.Thelongestandheaviestboneinthebodyisthefemurandthesmallestisthestapesboneinthemiddleear.37.Transducerisadevicethatwillconvertsomeformofenergyproducedbyaphysicalstimulustoananotherofthestimulus.38.Transductionistheprocessofconvertingthetransduciblepropertyintoanelectricalsignalthatcanbeinputtoaninstrument．39.Apassivesensoreitherprovidesitsownenergyorderivesitsenergyfromthephenomenonbeingmeasured.40.Sensorerrorsincludefivebasiccategories:insertion,application,characteristic,dynamicandenvironmentalerrors.41.Errorinherentisthedifferencebetweentheidealpublishedcharacteristictransferfunctionofthedeviceandtheactualcharacteristic.42.Bioelectrodesareaclassofsensorsthattransducerionicconductiontoelectronicconductionsothatthesignalcanbeprocessedinelectroniccircuits.43.Mostsuchbioelectricalsignalsareacquiredfromoneofthreeformsofelectrode:surfacemicroelectrodes,indwellingmicroelectrodes,microelectrodes.444.Theelectrodehalf-cellpotentialbecomesaseriousprobleminbioelectricsignalsacquisitionbecauseofthetremendousdifferencebetweenthethesedcpotentialsandthebiopotentials．45.Thepaste-oncolumnelectrodeisusedforlonger-termrecordingormonitoring-suchascontinuousmonitoringofahospitalizedpatientinCCU&ICU.46.Transducersdifferfromelectrodesinthattheyuseinterveningtransducibleelementtomakethemeasurement,whileelectrodesdirectlyacquirethesignal.47.Thermistorreliesonthechangeofelectricalresistanceofsomematerialsundergoingtemperaturechangestomeasuretemperature.48.There