Download Psychobiology Neurons= transmit information, human brain has 86

Psychobiology
Neurons=transmitinformation,humanbrainhas86billion
Anatomyofaneuron
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Dendrites=branchlikestructures,receiveinformation
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Soma/cellbody=protectsnucleus,phospholipidbilayermaintainsnegativecharge
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Axonhillock=gatekeeperoftransmissions,sumsgradedpotentialtodeterminefiringof
actionpotential
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Axon=longnervefiberconductingelectricalsignalsfromcellbody
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Myelinsheath=coatinginsulatingaxontoallowfastersignaling
o ProducedbySchwanncells
o NodesofRanvier=gapsbetweenmyelin,helpselectricalsignalsjump
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Axonterminals/terminalbuttons=chemicalmessagereleased,presynapticarea
Multiplesclerosis(MS)=autoimmunedisease
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Failureofcellsthatmyelinateaxons->reducedspeedofsignaltransmission->
musculoskeletalproblems
Neuronclassificationbytype
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Multipolar=manydendricsites,axonjoinedtoaxonterminalsbycollateralaxon
branches
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Bipolar=onedendricbranchconnectedtooneaxon+axonterminals
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Unipolar=dendritesconnectedtotriggerzone(notaxonhillock),linkedtoaxon+axon
terminals