神经元-神经生物学.pdf

2008-5-12 One of the Cajal’sOne of the Cajal’s Cellular NeurobiologyCellular Neurobiology many drawings ofmany drawings of Brain circuityBrain circuity Albert Cheung-Hoi YU 于常海 北京大學神經科學研究所 The letters label the different Neuroscience Research Institute elements Cajal identified in an Peking University area of the human cerebral Department of Neurobiology cortex that controls voluntary Peking University Health Science Center movement. achy@bjmu.edu.cn Cellular ComponentsCellular Components Nerve CellsNerve Cells • Neurons: Excitable cells – “wiringwiring” “SignalSignal SendersSenders” • Neuroglia: Support, Nurturing, Insulation Neurons Neuroglia Structure of NeuronsStructure of Neurons • Cell body (soma; perikaryon) • Axon : only one (branches are collaterals;