突触小泡 争争考 树突棘及棘器模式图 ② dendrite many short and more branches structure: similar to cell body dendritic spine( places for formation of synapse) and spine apparatus(structure formed by 2-3 layers SER) function receive the information
② dendrite: ---many, short and more branches ---structure: similar to cell body ---dendritic spine( places for formation of synapse) and spine apparatus(structure formed by 2-3 layers SER) ---function: receive the information
③axon thin less branch structure: no Nissl body, but have microtubule neurofilament. microfilament. mitochondria SER and vesicle e axon hillock: the beginning part of axon ●axo|emma ● axoplasm function initiate an impulse and conduct the impulse
③ axon: ---thin, less branch ---structure: no Nissl body, but have microtubule, neurofilament, microfilament, mitochondria, SER and vesicle axon hillock: the beginning part of axon axolemma axoplasm ---function: initiate an impulse and conduct the impulse
axonal transports: 粗面内质 细胞核 e slow anterograde: cytoskeletal 高尔基复神经元胞体 体 protein microtubule microfilament and neurofilament (0.104mm/d 顺向轴突输送 fast anterograde:/ synaptic 轴突 vesicles enzymes and proteins( 100-400mm/d) 逆向轴突输送 fast retrograde: products of 轴突终末 metabolism, intaking materials including protein or neurotrophic factors(100-400/d) 出胞作用(释放)入胞作用〔摄取
* axonal transports: slow anterograde: cytoskeletal protein: microtubule, microfilament and neurofilament (0.1-0.4mm/d) fast anterograde: synaptic vesicles, enzymes and proteins( 100-400mm/d) fast retrograde: products of metabolism, intaking materials including protein or neurotrophic factors(100-400/d)
胞体 微丝 微管 滑面内质网 神经丝 轴突 突触 快顺向轴突运輪
3)classification According to number of processes multipolar neuron bipolar neuron pseudounipolar neuron According to length of axon Golgi type I neuron: long axon and large Golgi type lI neuron short axon
3) classification: ---According to number of processes multipolar neuron bipolar neuron pseudounipolar neuron ---According to length of axon Golgi type I neuron: long axon and large Golgi type II neuron: short axon