axonal transports 细胞核 oo slow anterograde 商尔基复神经元胞体 cytoskeletal protein microtubule microfilament and neurofilament (0.1 0.4mm/d) 顺向轴突输送 ☆ fast anterograde 轴突 synaptic vesIcles, enzymes and proteins( 100-400 mm/d) 逆向轴突输送 oo fast retrograde 轴突终末 products of metabolism, intaking materials including protein or neurotropic factors(100-300 mm/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- 0.4 mm/d) ❖ fast anterograde synaptic vesicles, enzymes and proteins( 100-400 mm/d) ❖ fast retrograde products of metabolism, intaking materials including protein or neurotropic factors (100-300 mm/d)