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1、医学英语-英文版讲课PPT-呼吸系统-宁夏医科大学王雪源王雪源 苏苏 彤彤 王浩浩王浩浩 苏涛涛苏涛涛 王王 静静 马维平马维平马马 欣欣 马马 阳阳 马喜玲马喜玲马永强马永强LarynxTracheaBronchiBronchiolesAlveoliBronchiolesAlveoli(I)Breathing ProcessLungsarehighlyelastic(stretchable)BreathingiscontrolledbythemedullaMovementofthediaphragmandribcagecausespressurechangeinthechestcavityw
2、hichmovesairintoandoutofthelungsThebreathingrateiscontrolledbytheconcentrationofCO2inthebloodWhen you breath you are inhaling and exhaling.Inhalation=O2(oxygen)enters the body systemExhalation=CO2(carbon dioxide)is passed out of the body(II)The Mechanics of BreathingAirinhaledDiaphragmRibcagerisesAi
3、rexhaledDiaphragmRibcagelowersInhalationExhalation(III)Gas ExchangeTheexchangeofoxygenandcarbondioxidebetweentheatmosphereandtheblood.External RespirationTheexchangeofoxygenandcarbondioxidebetweenthebloodandthecellsofthebody.internal respiration cellular respirationOxygen transportHemoglobinbindstoo
4、xygenthatdiffusesintothebloodstream.Carbon dioxide transportCarbondioxidecandissolveinplasma,andabout70%formsbicarbonateions.Somecarbondioxidecanbindtohemoglobinfortransport.WhatisAsthmaDiseaseofchronicairwayinflammationCharacterizedby-airwayinflammation-airflowobstruction-airwayhyperresponsivenessC
5、ommonTriggers-Petsandanimals-Earlyinfections-Cigarettesmoke-Dustmites-Coldair-StressAsthmatreatmentAvoidincentivePatienteducationDrugtherapyAirwaytothedrugtechnologydrypowderinhalerDPI定量气雾剂metered-doseinhalerMDI干粉吸入剂吸入型糖皮质激素inhaledglucocorticosteroid，ICS）EmphysemaDiseaseinwhichthewallsofthealveolibr
6、eakdownDecreasingsurfaceareaDecreasingsurfaceareaforgasexchangeforgasexchangeShortnessofbreath,difficultybreathing,anddecreasedlungcapacityAllergiesAnallergyisanadversereactiontoaproteininourenvironment，theseproteinsarecalledallergensandarenormallyharmless.Inpeoplewithanallergy,thebodyreactstoaspeci
7、ficallergenbyreleasinghistaminefrommastcellsintheskin,lungs,noseorintestine.Thiscausesinflammationandswelling.AllergysymptomsPollenallergiescauserespiratorysymptomssimilartocolds.Sneezing,coughingandirritatedeyesareallcommonsymptomsofallergytopollen.Theseallergies,althoughuncomfortable,arenotusuallylife-threatening;however,asthmaticsmayexperiencedangerousasthmaattacks.THEENDTHANKYOU结束语结束语谢谢大家聆听！谢谢大家聆听！29