Stress and He

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1、StressandHealthTheRealReasonPeterPanNeverGrewUpWhatmakesyoustressed?Thelastbagelisgone!I’mgoingtobelateforwork!WhatmakesaZebraStressed?Isthereenoughtoeat?AmIgoingtobeeaten?ThreeTypesofStress:AcutePhysicalStressors:Requireimmediatephysiologicalresponseinordertosurvive.e.g.at

2、tackornaturaldisaster(Catastrophe)Bodydoeswell!ChronicPhysicalStressors:e.g.starvation,drought,dangerouslivingconditions.BodydoesOK.PsychologicalandSocialStressors:pressuresinoursocial,culturalandeconomicenvironment.e.g.maritalstress,hasslesorworkburnoutCanbebasedonthoughts

3、alone!Bodydoesnotdosowell.Reminder...ThebodyisdividedintotheCENTRAL(brainandspinalchord)andPERIPHERAL(alltheneuronsthatconnectthebodytotheCNS)NervousSystems.PeripheralnervoussystemisdividedintotheSOMATIC(voluntary)andtheAUTONOMIC(involuntary)NervousSystemsTheAutonomicnervou

4、ssystemisdividedintotheSYMPATHETICandthePARASYMPATHETICNervousSystems.TheAutonomicNervousSystem(ANS)ParasympatheticDivision“VegetativeFunctions”IncreaseddigestionIncreasedsalivaDecreasedheartrateDecreasedbreathingIncreasedbloodflowtogutRestfulstateSympatheticDivision“Fighto

5、rFlight”ResponseDecreaseddigestionDecreasedsalivaIncreasedheartrateIncreasedbreathingShuntingofbloodfromguttoothertissues(skeletalmuscle,heart,brain)HeightenedarousalandvigilanceResultsofChronicStress:IncreasedfatigueIncreasedriskofheartdiseaseIncreasedriskofdiabetesDecreas

6、edreproductivefunctionDecreaseddigestionDecreasedgrowth!TheAccidental“Discovery”ofStressEndocrinologistHansSeyle’spoorrats.GeneralAdaptationSyndrome(Threestages)1.ALARMREACTION-thebody’sstressresponse2.RESISTANCE-balanceistemporarilyre-attainedbyadaptingtothepresenceofthest

7、ressor3.EXHAUSTION-ifstressorremains,resourcesaredepleted,leadingtoillnessordeathSeyle’s(NowRevised)GeneralAdaptionSyndromeAlarmReactionResistance/AdaptionIllness--ifstressorremains,stressresponseitselfbeginstocauselongtermdamageIsStressAlwaysBad?Somelevelofarousalisstimula

8、tingandmotivatingPeoplevaryinhowtheyrespondtostress,basedonthingssuchas:Physiologi