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SympatheticDivision ⢠Sympatheticchain â Location:eithersideofvertebralcolumn â Innervateeffectorsinbodywall,insidethoraciccavity â preganglionicfiberssynapseonpostganglionicfibers veryclosetotheCNSandfarawayfromeffector organs ⢠Collateralganglia â Location:betweensympatheticchainandeffector ⢠Adrenalmedulla â Sympatheticpreganglionicneuronsenteradrenal medullaandstimulatepostganglionicneurons â Cellsrespondandreleaseadrenalin(80%epinephrine, 20%norepinephrine)