autonomic nervous system and somatic nervous system分析课件

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1、AutonomicNervousSystemandSomaticnervoussystemAutonomicNervousSystemAutonomicNervousSystemIntroductionApartoftheperipheralnervoussystemlocatedinthemedullaoblongatainthelowerbrainstemAutonomicNervousSystemIntroductionmajorANSfunctionsincluderespirationcardiacregulation,vaso

2、motoractivity,andcertainreflexactionsdividedintotwosubsystems:theparasympatheticnervoussystem(PSNS)andsympatheticnervoussystem(SNS)FunctioncomparingTargetSympathetic(adrenergic)Parasympathetic(muscarinic)cardiacoutputβ1,(β2):increasesM2:decreasesAtrialcardiacmuscle:contra

3、ctility(inotropic)β1,(β2):[5]increasesM2:decreasesVentricularcardiacmuscleβ1,(β2):increasescontractility(inotropic)increasescardiacmuscleautomaticity[5]---sympatheticsystemcellbodiesinthelateralhornofthespinalcordT1toL2/3GVE(generalvisceralefferent)neuronsandaretheprega

4、nglionicneuronsparasympatheticsystemcellbodiesfromoneoftwolocationsbrainstemorsacralspinalcordSomaticNervousSystemSomaticNervousSystemIntroductionconsistsofefferentnervesresponsibleforstimulatingmusclecontractionnon-sensoryneuronsconnectedwithskeletalmusclesandskinfortyth

5、reesegmentsofnervesinourbodyandwitheachsegmentthereisapairofsensoryandmotornervesSomaticnervoussystemsensoryreceptorstouch,temperature,pressure,andpaincarrymotorcommandstoskeletalmusclesThankyou