Nervous System 1 PDF

The nervous system 9.1 partsofthenervous system whatis thenervoussystem it communicatesthroughelectricaland chemical signals system CNS centralnervous system PNS Peripheral nervous system made...

The nervous system 9.1 partsofthenervous system whatis thenervoussystem it communicatesthroughelectricaland chemical signals system CNS centralnervous system PNS Peripheral nervous system made ofbrain andNS consists of all other parts of Ns relaysinfo between body and CNS terms broken down further into autonomic Ns and somatic NS If or conductingoutwardor away from something autonomic NS this part of thePNSis involentry Entitlinginwardtowards something to p sy p intergration motoroutput sympathic stress afightorflight infoprocessed effectororgansactivated parasympaticcalm arrestanddigest byefferentnerves sensoryinput receptorstomotorchanges stiff ues somatic vs sensory neurons otherbranchof PNS is voluntary linkotherneuronstogether this section can be broken into photoreceptors D sensory andmotor detectlight is chemoreceptors from sensoryneurons and then send thisintotomotor 89 5 1 8 Pci Yaffe.fifhfundings neurons thiththpectors motorneuronspickup infofrom CNS and sends to restofbody efferentneurons mditiatn.tl ptors ffcetopfffs inrelationto CNSwhatis thedifference p betweenefferentand afferent detectpain a'way to motor sensory Nervoustissue maincell forcommunication 2types neuronmaincommunication excitabletransmit electric signals neurogliaorglia supportcellsnerve give functionprotectprovidewithoxygenandinsulation a ans neuros Schwanncells tuna iij.ie iiii formsmyelinsheath all neurons have a cell body myelination s cans when found in CNS neuate brain dendrite e.ie ijiii 2 fff formsthelining offluidfilledspace y node fdfIiaxon terminal ifeng.im axon f terms nucleus schwann cells Somacellbody Myelin containnucleusandothercellorganelles sheath functioncellmaintenance dendrites it ITSndo Yansmitersreleased from otherneurons functionrecieveinfofrom connecting neurons axon Tfftp.fffffofffa hf If Ishrat alsocalled nervefibers nerve impulse generated transmittedhere axon canbranch II's c's function transmitsinfo away nodes of ranvier neuron anatomy gapsbetween sections myelinsheath infojumps section section speedinguptagnson myelinsheath made of fatty protien 19 tough.info prevents loss of charged ions ynapszietig tartEs of recall Schwanncells next neuron involved in MS myelinsheath attacked by immunesystem