药剂英文试题及答案

药剂英文试题及答案一、选择题（30分）1.WhichofthefollowingisNOTacharacteristicofanidealpharmaceuticalformulation?A.StabilityB.SafetyC.ComplexityD.Efficacy2.Theprocessbywhichdrugmoleculesdissolveinasolventiscalled:A.DiffusionB.DissolutionC.DisintegrationD.Dispersion3.Whichrouteofadministrationbypassesthefirst-passmetabolism?A.OralB.IntravenousC.SublingualD.Intramuscular4.Theterm"bioavailability"refersto:A.TherateandextenttowhichadrugisabsorbedintothesystemiccirculationB.TheamountofdrugexcretedunchangedinurineC.ThetimetakenforadrugtoreachitspeakconcentrationD.Thedurationofdrugactioninthebody5.Whichofthefollowingisanaturalpolymerusedinpharmaceuticalformulations?A.Polyvinylpyrrolidone(PVP)B.Polylacticacid(PLA)C.SodiumalginateD.Celluloseacetate6.ThepHofthegastrointestinaltractaffectsdrugabsorptionprimarilyby:A.AlteringthesolubilityofionizabledrugsB.IncreasinggastricemptyingrateC.Reducingfirst-passmetabolismD.Enhancingdrugstability7.WhichofthefollowingisNOTatypeofdrug-excipientinteraction?A.ChemicalinteractionB.PhysicalinteractionC.BiologicalinteractionD.Pharmaceuticalinteraction8.Theshelflifeofapharmaceuticalproductisprimarilydeterminedby:A.MarketdemandB.RegulatoryrequirementsC.StabilitystudiesD.Manufacturingcapacity9.WhichofthefollowingisNOTamethodtoenhancedrugsolubility?A.ComplexationB.ParticlesizereductionC.IncreasingmolecularweightD.Saltformation10.Theprocessofaddingasubstancetoaformulationtopreventmicrobialgrowthiscalled:A.PreservationB.StabilizationC.EmulsificationD.Solubilization11.WhichofthefollowingisNOTatypeofcontrolleddrugdeliverysystem?A.Sustained-releasesystemsB.TargeteddeliverysystemsC.Immediate-releasesystemsD.Pulsatilereleasesystems12.Theterm"therapeuticequivalence"refersto:A.TwoproductshavingthesameactiveingredientB.TwoproductshavingthesamepharmaceuticalformC.TwoproductshavingthesamerateandextentofabsorptionD.Twoproductshavingthesameexcipients13.WhichofthefollowingisNOTafactoraffectingdrugstability?A.TemperatureB.LightC.HumidityD.Color14.Theprocessbywhichasoliddrugisconvertedintoaliquidformulationiscalled:A.SolubilizationB.EmulsificationC.SuspensionD.Solution15.WhichofthefollowingisNOTatypeofparenteraladministration?A.IntravenousB.IntramuscularC.SublingualD.Subcutaneous16.Theprocessofreducingparticlesizetoincreasesurfaceareaiscalled:A.MicronizationB.GranulationC.MixingD.Drying17.WhichofthefollowingisNOTarouteofdrugadministration?A.IntradermalB.IntrathecalC.IntracoronaryD.Intraperitoneal18.Theterm"excipient"refersto:A.TheactivepharmaceuticalingredientB.AnysubstanceotherthantheactiveingredientC.AsubstanceaddedtoenhancedrugefficacyD.Asubstanceusedonlyininjectableformulations19.WhichofthefollowingisNOTatypeofdissolutiontestingapparatus?A.USPApparatusI(Basket)B.USPApparatusII(Paddle)C.USPApparatusIII(Reciprocatingcylinder)D.USPApparatusIV(Flow-throughcell)20.Theprocessbywhichadrugisdistributedthroughoutthebodyafteradministrationiscalled:A.AbsorptionB.DistributionC.MetabolismD.Excretion21.WhichofthefollowingisNOTatypeoftabletcoating?A.SugarcoatingB.FilmcoatingC.CompressioncoatingD.Solventcoating22.Theterm"pharmacokinetics"refersto:A.ThestudyofdrugeffectsonthebodyB.ThestudyofhowthebodyhandlesdrugsC.ThestudyofdrugsynthesisD.Thestudyofdrugformulation23.WhichofthefollowingisNOTatypeofemulsion?A.Oil-in-water(O/W)B.Water-in-oil(W/O)C.MultipleemulsionD.Solid-in-water(S/W)24.Theprocessbywhichadrugisconvertedintometabolitesiscalled:A.AbsorptionB.DistributionC.MetabolismD.Excretion25.WhichofthefollowingisNOTatypeofpharmaceuticalstability?A.ChemicalstabilityB.PhysicalstabilityC.MicrobiologicalstabilityD.Therapeuticstability26.Theterm"bioequivalence"refersto:A.TwoproductshavingthesameactiveingredientB.TwoproductshavingthesamepharmaceuticalformC.TwoproductshavingthesamerateandextentofabsorptionD.Twoproductshavingthesameexcipients27.WhichofthefollowingisNOTatypeofcontrolled-releasesystem?A.MatrixsystemsB.ReservoirsystemsC.Immediate-releasesystemsD.Osmoticsystems28.Theprocessbywhichadrugiseliminatedfromthebodyiscalled:A.AbsorptionB.DistributionC.MetabolismD.Excretion29.WhichofthefollowingisNOTatypeofparenteralsterilizationmethod?A.AutoclavingB.FiltrationC.GammairradiationD.Pasteurization30.Theterm"therapeuticwindow"refersto:A.ThetimeperiodduringwhichadrugiseffectiveB.TherangeofdrugconcentrationsthatproducetherapeuticeffectswithouttoxicityC.ThedosagerangeforaparticulardrugD.Thetimerequiredforadrugtoreachsteadystate二、填空题（20分）1.Theprocessofreducingparticlesizetoincreasesurfaceareaiscalled________.2.Thebranchofpharmacythatdealswiththepreparation,compounding,anddispensingofmedicationsiscalled________.3.Thestudyofdrugabsorption,distribution,metabolism,andexcretionisknownas________.4.Asubstanceaddedtoaformulationtoimprovepalatabilityiscalleda(n)________.5.Thetypeofemulsionwhereoilisdispersedinwateriscalled________emulsion.6.Theprocessbywhichasoliddrugdissolvesinaliquidmediumiscalled________.7.Adosageformthatreleasesthedrugimmediatelyuponadministrationiscalled________.8.Themeasureofadrug'sabilitytoproduceatherapeuticeffectiscalled________.9.Thetypeofsolutionwherethedrugisdissolvedinamixtureofwaterandalcoholiscalled________solution.10.Theprocessbywhichadrugisdistributedthroughoutthebodyafteradministrationiscalled________.11.Asubstanceaddedtoaformulationtopreventoxidationiscalleda(n)________.12.Thetypeofcolloidaldispersionwheresolidparticlesaredispersedinaliquidmediumiscalled________.13.Theprocessbywhichadrugiseliminatedfromthebodyiscalled________.14.Thetypeofpharmaceuticalpreparationthatcontainsdrugparticlessuspendedinaliquidmediumiscalled________.15.Thebranchofpharmacythatdealswiththedesignandevaluationofdrugdeliverysystemsiscalled________.16.Theprocessbywhichadrugisconvertedintometabolitesiscalled________.17.Thetypeofpharmaceuticalpreparationthatcontainsdrugparticlesdissolvedinaliquidmediumiscalled________.18.Theprocessbywhichadrugisabsorbedintothesystemiccirculationiscalled________.19.Thetypeoftabletthatdissolvesquicklyinthemouthiscalled________tablet.20.Theprocessbywhichadrugproductismadefreefrommicroorganismsiscalled________.三、判断题（15分）1.Alldrugsaremorestableintheirsolidformthanintheirliquidform.()2.Thebioequivalenceoftwogenericdrugscanbeestablishedbyinvitrotestingalone.()3.Thefirst-passeffectreferstothemetabolismofadrugintheliverbeforeitreachessystemiccirculation.()4.Allexcipientsarepharmacologicallyinactive.()5.Thedissolutionrateofadrugisdirectlyproportionaltoitsparticlesize.()6.pH-independentreleaseisacharacteristicofallsustained-releaseformulations.()7.Parenteraladministrationalwaysresultsin100%bioavailability.()8.Theshelflifeofapharmaceuticalproductisthesameasitsexpirationdate.()9.Alldrugsfollowfirst-orderkinetics.()10.Theprocessofsterilizationcandestroyalltypesofmicroorganisms,includingspores.()11.Allpharmaceuticalingredientsmustcomplywithpharmacopeialstandards.()12.Thebioavailabilityofadrugisnotaffectedbyfoodintake.()13.Alldrugsareabsorbedmorerapidlyfromthestomachthanfromtheintestine.()14.Thestabilityofadrugproductisnotaffectedbypackagingmaterials.()15.Allcontrolled-releaseformulationsaredesignedforonce-dailyadministration.()16.Therateofdrugabsorptionisalwaysfasterthantherateofdrugelimination.()17.Allpharmaceuticalformulationsmustcontainanactivepharmaceuticalingredient.()18.ThedissolutionrateofadrugisindependentofthepHofthedissolutionmedium.()19.Alloraldosageformsmustundergodisintegrationbeforedrugabsorption.()20.Thebioavailabilityofadrugisthesameregardlessoftherouteofadministration.()四、名词解释（15分）1.Bioavailability2.Excipient3.Pharmacokinetics4.TherapeuticDrugMonitoring5.First-passeffect6.Formulationdevelopment7.Stabilitytesting8.Dissolution9.Bioequivalence10.Pharmacodynamics11.Expirationdate12.Preservative13.Polymericexcipient14.Controlledrelease15.Biopharmaceutics16.Therapeuticwindow17.Dosageform18.Particlesizereduction19.Emulsion20.Sterilization五、简答题（20分）1.Explainthefactorsaffectingdrugabsorptionfromthegastrointestinaltract.2.Describethedifferenttypesofpharmaceuticaldosageformsandtheiradvantages.3.Whataretheconsiderationsinselectingexcipientsforapharmaceuticalformulation?4.Explainthedifferencebetweenbioavailabilityandbioequivalence.5.Describetheprocessofformulationdevelopmentforanewdrugproduct.答案：一、选择题答案1.C.Complexity-Anidealpharmaceuticalformulationshouldbestable,safe,andeffective,butcomplexityisnotnecessarilyadesirablecharacteristicasitcanaffectmanufacturingandpatientcompliance.2.B.Dissolution-Dissolutionistheprocessbywhichdrugmoleculesdissolveinasolvent,formingasolution.3.C.Sublingual-Sublingualadministrationbypassesthefirst-passmetabolismbecausedrugsareabsorbeddirectlyintothesystemiccirculationthroughthesublingualmucosa.4.A.Therateandextenttowhichadrugisabsorbedintothesystemiccirculation-Bioavailabilityreferstothefractionoftheadministereddosethatreachesthesystemiccirculationinunchangedform.5.C.Sodiumalginate-Sodiumalginateisanaturalpolymerderivedfromseaweed,whilePVPandPLAaresyntheticpolymers,andcelluloseacetateisasemi-syntheticpolymer.6.A.Alteringthesolubilityofionizabledrugs-ThepHofthegastrointestinaltractaffectstheionizationstateofdrugs,whichinturnaffectstheirsolubilityandabsorption.7.D.Pharmaceuticalinteraction-Drug-excipientinteractionscanbechemical(e.g.,reactionbetweendrugandexcipient),physical(e.g.,adsorption),orbiological(e.g.,effectondrugrelease),butnotpharmaceutical.8.C.Stabilitystudies-Theshelflifeofapharmaceuticalproductisdeterminedbystabilitystudiesthatassesstheproduct'squalityovertimeundervariousstorageconditions.9.C.Increasingmolecularweight-Increasingmolecularsizetypicallydecreasessolubility,whiletheotheroptions(complexation,particlesizereduction,saltformation)aremethodstoenhancesolubility.10.A.Preservation-Preservationistheadditionofsubstancestopreventmicrobialgrowthinpharmaceuticalformulations.11.C.Immediate-releasesystems-Controlleddrugdeliverysystemsincludesustained-release,targeted,andpulsatilereleasesystems,butnotimmediate-releasesystems.12.C.Twoproductshavingthesamerateandextentofabsorption-Therapeuticequivalencemeansthattwoproductshavethesamerateandextentofabsorption,leadingtosimilartherapeuticeffects.13.D.Color-Whilecolorcanaffecttheaestheticappealofaproduct,itisnotafactoraffectingdrugstability,unliketemperature,light,andhumidity.14.A.Solubilization-Solubilizationistheprocessofdissolvingasoliddruginaliquidmediumtoformasolution.15.C.Sublingual-Parenteraladministrationincludesroutesthatbypassthegastrointestinaltract,suchasintravenous,intramuscular,andsubcutaneousadministration,butnotsublingual,whichisanenteralroute.16.A.Micronization-Micronizationistheprocessofreducingparticlesizetoincreasesurfacearea,typicallytoenhancedissolutionrate.17.C.Intracoronary-Whileintracoronaryadministrationexistsinspecificmedicalprocedures,itisnotastandardrouteofdrugadministrationliketheotherslisted.18.B.Anysubstanceotherthantheactiveingredient-Excipientsareallsubstancesinaformulationotherthantheactivepharmaceuticalingredient.19.D.Solventcoating-USPdissolutiontestingapparatusincludesI(Basket),II(Paddle),III(Reciprocatingcylinder),andIV(Flow-throughcell),butnota"Solventcoating"apparatus.20.B.Distribution-Distributionistheprocessbywhichadrugistransportedfromthebloodstreamtovarioustissuesandorgansinthebody.21.D.Solventcoating-Tabletcoatingtypesincludesugarcoating,filmcoating,andcompressioncoating,butnotsolventcoatingasastandardcategory.22.B.Thestudyofhowthebodyhandlesdrugs-Pharmacokineticsisthestudyofdrugabsorption,distribution,metabolism,andexcretion(ADME).23.D.Solid-in-water(S/W)-Standardemulsiontypesincludeoil-in-water(O/W),water-in-oil(W/O),andmultipleemulsions,butnotsolid-in-water.24.C.Metabolism-Metabolismistheprocessbywhichdrugsarechemicallymodifiedinthebody,typicallyintheliver.25.D.Therapeuticstability-Typesofpharmaceuticalstabilityincludechemicalstability,physicalstability,andmicrobiologicalstability,butnottherapeuticstability.26.C.Twoproductshavingthesamerateandextentofabsorption-Bioequivalencemeansthattwoproductshavethesamerateandextentofabsorption,leadingtosimilartherapeuticeffects.27.C.Immediate-releasesystems-Controlled-releasesystemsincludematrixsystems,reservoirsystems,andosmoticsystems,butnotimmediate-releasesystems.28.D.Excretion-Excretionistheprocessbywhichdrugsandtheirmetabolitesareeliminatedfromthebody,primarilythroughurine,feces,breath,orsweat.29.D.Pasteurization-Parenteralsterilizationmethodsincludeautoclaving,filtration,andgammairradiation,butpasteurizationisnottypicallyusedforparenteralproductsasitdoesn'tachievecompletesterilization.30.B.Therangeofdrugconcentrationsthatproducetherapeuticeffectswithouttoxicity-Thetherapeuticwindowistherangeofdrugconcentrationsthatprovidetherapeuticefficacywithoutcausingadverseeffects.二、填空题答案1.Theprocessofreducingparticlesizetoincreasesurfaceareaiscalledmillingormicronization.2.Thebranchofpharmacythatdealswiththepreparation,compounding,anddispensingofmedicationsiscalledpharmacypracticeorcommunitypharmacy.3.Thestudyofdrugabsorption,distribution,metabolism,andexcretionisknownaspharmacokinetics.4.Asubstanceaddedtoaformulationtoimprovepalatabilityiscalledaflavoringagent.5.Thetypeofemulsionwhereoilisdispersedinwateriscalledoil-in-water(O/W)emulsion.6.Theprocessbywhichasoliddrugdissolvesinaliquidmediumiscalleddissolution.7.Adosageformthatreleasesthedrugimmediatelyuponadministrationiscalledanimmediate-releasedosageform.8.Themeasureofadrug'sabilitytoproduceatherapeuticeffectiscalledpotency.9.Thetypeofsolutionwherethedrugisdissolvedinamixtureofwaterandalcoholiscalledhydroalcoholicsolution.10.Theprocessbywhichadrugisdistributedthroughoutthebodyafteradministrationiscalleddistribution.11.Asubstanceaddedtoaformulationtopreventoxidationiscalledanantioxidant.12.Thetypeofcolloidaldispersionwheresolidparticlesaredispersedinaliquidmediumiscalledasuspension.13.Theprocessbywhichadrugiseliminatedfromthebodyiscalledexcretion.14.Thetypeofpharmaceuticalpreparationthatcontainsdrugparticlessuspendedinaliquidmediumiscalledasuspension.15.Thebranchofpharmacythatdealswiththedesignandevaluationofdrugdeliverysystemsiscalledpharmaceuticsorpharmaceuticaltechnology.16.Theprocessbywhichadrugisconvertedintometabolitesiscalledmetabolism.17.Thetypeofpharmaceuticalpreparationthatcontainsdrugparticlesdissolvedinaliquidmediumiscalledasolution.18.Theprocessbywhichadrugisabsorbedintothesystemiccirculationiscalledabsorption.19.Thetypeoftabletthatdissolvesquicklyinthemouthiscalledanorallydisintegratingtabletorbuccaltablet.20.Theprocessbywhichadrugproductismadefreefrommicroorganismsiscalledsterilization.三、判断题答案1.False-Whilemanydrugsaremorestableinsolidform,somedrugsaremorestableinliquidformduetofactorslikecrystallizationtendencyinsolidstate.2.False-Bioequivalenceofgenericdrugsrequiresbothinvitrotestingandinvivostudies(e.g.,bioavailabilitystudies)todemonstratesimilarabsorptionrates.3.True-Thefirst-passeffectreferstothemetabolismoforallyadministereddrugsintheliverbeforetheyreachsystemiccirculation.4.False-Someexcipientscanhavepharmacologicaleffects,suchascertainsurfactantsthatcanenhanceabsorptionorcauseirritation.5.False-Thedissolutionrateisinverselyproportionaltoparticlesize;smallerparticleshavelargersurfaceareaanddissolvefaster.6.False-WhilepH-independentreleaseisdesirableforsustained-releaseformulations,notallsustained-releasesystemsachievethis;somearepH-dependent.7.False-Whileparenteraladministrationgenerallybypassesfirst-passmetabolism,bioavailabilityisnotalways100%duetofactorslikeincompleteabsorptionordistributionissues.8.False-Shelflifeistheperiodduringwhichaproductmaintainsitsqualityunderspecifiedstorageconditions,whileexpirationdateisthedateafterwhichtheproductshouldnotbeused.9.False-Somedrugsfollowzero-orderkinetics(constantrateofeliminationregardlessofconcentration),whileothersfollowfirst-orderkinetics(rateproportionaltoconcentration).10.True-Sterilizationprocessesaredesignedtodestroyallmicroorganisms,includingspores,whicharemoreresistantthanvegetativecells.11.True-Pharmacopeialstandards(e.g.,USP,EP)providespecificationsforpharmaceuticalingredientstoensurequalityandsafety.12.False-Foodintakecansignificantlyaffectthebioavailabilityofmanydrugsbyalteringgastricemptying,pH,ordrugsolubility.13.False-Whilesomedrugsareabsorbedfromthestomach,themajorityofdrugabsorptionoccursinthesmallintestineduetoitslargersurfaceareaandlongertransittime.14.False-Packagingmaterialscanaffectdrugstabilitythroughinteractionslikeadsorption,permeationofmoistureoroxygen,orleachingofcomponents.15.False-Controlled-releaseformulationsaredesignedforvariousadministrationfrequencies,includingonce-daily,twice-daily,orevenlessfrequentdosing,dependingonthedrug'spharmacokineticproperties.16.False-Therateofdrugabsorptioncanbeslowerthantherateofdrugeliminationforsomedrugs,especiallythosewithrapidclearance.17.False-Somepharmaceuticalformulations,suchasplacebosorexcipientsalone,maynotcontainanactivepharmaceuticalingredient.18.False-ThedissolutionrateofadrugcanbesignificantlyaffectedbythepHofthedissolutionmedium,especiallyforionizabledrugs.19.False-Someoraldosageforms,suchassolutionsandsuspensions,donotrequiredisintegrationasthedrugisalreadyinadissolvedordispersedstate.20.False-Bioavailabilityvarieswiththerouteofadministration,withintravenousadministrationtypicallyhavingthehighestbioavailability(100%),whileotherroutesmayhavelowerbioavailabilityduetofactorslikefirst-passmetabolismorincompleteabsorption.四、名词解释答案1.Bioavailability:Therateandextenttowhichanactivepharmaceuticalingredient(API)isabsorbedfromadosageformandbecomesavailableatthesiteofaction.Itistypicallyexpressedasapercentagecomparedtoanintravenousadministration(absolutebioavailability)oranotherreferenceformulation(relativebioavailability).2.Excipient:Apharmacologicallyinactivesubstanceusedasacarrierfortheactivepharmaceuticalingredientindrugformulations.Excipientsprovidebulk,enhancestability,improvepalatability,aidindrugrelease,orfacilitateadministration.Examplesincludebinders,fillers,disintegrants,lubricants,andpreservatives.3.Pharmacokinetics:Thestudyofdrugabsorption,distribution,metabolism,andexcretion(ADME)inthebody.Itdescribeshowthebodyhandlesdrugs,includingthetimecourseofdrugconcentrationinvarioustissuesandthemathematicalmodelingoftheseprocesses.4.TherapeuticDrugMonitoring:Theclinicalpracticeofmeasuringdrugconcentrationsinbloodplasmatoensuredruglevelsremainwithinthetherapeuticwindow.Itisparticularlyimportantfordrugswithnarrowtherapeuticindices,wheresmallchangesinconcentrationcanleadtotoxicityorlackofefficacy.5.First-passeffect:Thephenomenonwhereorallyadministereddrugsaremetabolizedbytheliverbeforereachingsystemiccirculation.Thisreducesthebioavailabilityofthedrugandcanbeinfluencedbyfactorslikeliverfunction,enzymeactivity,andbloodflowtotheliver.6.Formulationdevelopment:Thescientificprocessofdesigningandoptimizingapharmaceuticaldosageformtoachievedesiredtherapeuticgoals.Itinvolvesselectingappropriateexcipients,determiningmanufacturingprocesses,conductingstabilitytesting,andensuringproductqualityandperformance.7.Stabilitytesting:Thesystematicevaluationofapharmaceuticalproduct'sphysical,chemical,andmicrobiologicalpropertiesundervariousstorageconditionsovertime.Ithelpsdetermineshelflife,storagerequirements,andpackagingspecificationsfortheproduct.8.Dissolution:Theprocessbywhichasoliddrugsubstancedissolvesinasolvent(typicallygastrointestinalfluids)toformasolution.Itisacriticalstepindrugabsorptionandisinfluencedbyfactorslikeparticlesize,crystalform,pH,andagitation.9.Bioequivalence:Apharmaceuticalequivalencebetweentwoproductswheretherateandextentofabsorptionoftheactiveingredientarenotsignificantlydifferentundersimilarexperimentalconditions.Bioequivalentproductsareexpectedtoproducethesametherapeuticeffects.10.Pharmacodynamics:Thestudyofthebiochemicalandphysiologicaleffectsofdrugsonthebody,includingmechanismsofdrugaction,receptorinteractions,dose-responserelationships,andtimecourseofeffects.Itcomplementspharmacokineticsbydescribingwhatthedrugdoestothebody.11.Expirationdate:Thedateafterwhichapharmaceuticalproductshouldnotbeused.Itisdeterminedthroughstabilitytestingandindicatesthetimeduringwhichtheproductisexpectedtoremainwithinestablishedqualityspecificationswhenstoredunderrecommendedconditions.12.Preservative:Asubstanceaddedtopharmaceuticalformulationstopreventmicrobialgrowthorchemicaldegradation.Preservativesareparticularlyimportantinmulti-dosecontainersandaqueousformulationstomaintainproductsafetyandefficacythroughouttheshelflife.13.Polymericexcipient:Ahighmolecularweightpolymerusedinpharmaceuticalformulationstomodifydrugrelease,enhancestability,orprovidemechanicalstrength.Examplesincludenaturalpolymers(e.g.,cellulosederivatives),semi-syntheticpolymers(e.g.,chitosan),andsyntheticpolymers(e.g.,polyethyleneglycol).14.Controlledrelease:Adrugdeliverysystemdesignedtoprovideapredeterminedreleaseprofileoftheactiveingredient,maintainingtherapeuticbloodlevelsoveranextendedperiod.Itincludesvariousapproacheslikesustainedrelease,delayedrelease,andtargeteddelivery.15.Biopharmaceutics:Thestudyofthephysicalandchemicalpropertiesofdrugsanddosageformsthatinfluencedrugdeliveryandperformanceinthebody.Itencompassesfactorsaffectingdrugabsorption,bioavailability,andtherelationshipbetweenformulationcharacteristicsandtherapeuticoutcomes.16.Therapeuticwindow:Therangeofdrugconcentrationsthatproducetherapeuticeffectswithoutcausingadverseeffects.Drugswithnarrowtherapeuticwindowsrequirecarefuldosingandmonitoringtoavoidtoxicity,whilethosewithwidetherapeuticwindowshavemoreflexibilityindosing.17.Dosageform:Thephysicalforminwhichadrugisadministeredtoapatient,designedtodeliverthedruginaspecificmannerforoptimaltherapeuticeffect.Examplesincludetablets,capsules,solutions,suspensions,creams,andinjectables.18.Particlesizereduction:Theprocessofreducingthesizeofdrugparticlestoincreasesurfaceareaandimprovedissolutionrate.Methodsincludemilling,micronization,andprecipitation,whichcanenhancebioavailabilityofpoorlysolubledrugs.19.Emulsion:Acolloidaldispersionsystemconsistingoftwoimmiscibleliquids,whereoneliquidisdispersedasdropletsthroughouttheother.Commontypesincludeoil-in-water(O/W)andwater-in-oil(W/O)emulsions,stabilizedbyemulsifyingagents.20.Sterilization:Theprocessofdestroyingallformsofmicroorganisms,includingbacteria,viruses,fungi,andspores,torenderaproductsterile.Methodsincludeheat(autoclaving),radiation,filtration,andchemicalsterilization,dependingontheproduct'scharacteristics.五、简答题答案1.Factorsaffectingdrugabsorptionfromthegastrointestinaltract:a.Physicochemicalpropertiesofthedrug:-Lipophilicity:Morelipophilicdrugsgenerallycrosscellmembranesmoreeasily-Molecularsize:Smallermoleculesareabsorbedmorereadily-Ionizationstate:Onlyunionizeddrugscandiffuseacrosslipidmembranes;pHaffectsionization-Solubility:Highersolubilitygenerallyleadstobetterabsorptionb.Gastrointestinalfactors:-Gastricemptyingrate:Affectstherateatwhichdrugsreachtheabsorptionsite-Intestinaltransittime:Longertransitallowsmoretimeforabsorption-Surfacearea:Thesmallintestinehasalargersurfaceareaduetovilliandmicrovilli-Bloodflow:Adequatebloodflow