afferentpathways biology biomedicine chemistry clinicalneurophysiology cytology general humanbiology lifesciences localizationoffunction localizationoffunctions medical medicine/publichealth microbiology moelleepiniere neurology neuroscience neurosciences nursing physiology posteriorhorncells ruggenmerg sensation sensesandsensation sensetsensations sensoryreceptorcells sensoryreceptors spinalcord spinalganglia voiesafferentes