Structure of neurons-the processes Dendrites树突 Axon like branches of tree terminals information input 1)一条以上并分枝 2)表面粗糙有树突棘, 3)接受刺激传导冲动到胞体。 Axon轴突 Axon long thin cord-liked process information output 1)一条,分支少,常在末端呈直角分出 axon hillock),无尼氏体,有神经原纤维 3)传出冲动。 Dendrites
Structure of neurons-the processes Dendrites 树突: like branches of tree information input 1）一条以上并分枝 2）表面粗糙有树突棘, 3）接受刺激传导冲动到胞体。 Axon 轴突: long thin cord-liked process information output 1）一条，分支少，常在末端呈直角分出 2）轴丘(axon hillock)，无尼氏体，有神经原纤维 3）传出冲动。 Axon Dendrites Axon terminals
Dendrites树突 many, short and more branches Contents: similar to the cell body Dendrin function: receive information dendritic spines(树突棘) ● Zelkorper mll zellen places for synapse formation Increase the surface volume Axon mit Myallnschelde Ranviersche Schnurringe
Dendrites 树突 many, short and more branches Contents: similar to the cell body function: receive information dendritic spines (树突棘) places for synapse formation Increase the surface volume
Basic Neuron Design Dendrites Cell Body Axon Hillock Myelin Sheath Axon Node of Ranvier
Axon轴突 thin. less branch the longest axon( siatic nerve) can reach 1m no Nissl body have microtubules neurofilaments microfilaments, mitochondria. SER and vesicles axon hillock #t I: the initiating part of axon (no Nissl body) Axolemma轴膜: membrane on the axon surface AXoplasm轴浆: plasma within the axon Axon terminal function: To initiate and conduct the impulse axon hillocks
thin, less branch， the longest axon（siatic nerve） can reach ~1m no Nissl body have microtubules, neurofilaments, microfilaments, mitochondria, SER and vesicles • axon hillock 轴丘: the initiating part of axon(no Nissl body) • Axolemma 轴膜: membrane on the axon surface • Axoplasm 轴浆：plasma within the axon • Axon terminal ---function: To initiate and conduct the impulse axon hillock Axon 轴突
Information flow through neurons Nucleus Dendrites Cell body Axon Collect Integrates incoming Passes electrical signals electrical signals and generates to dendrites of another signals outgoing signal to cell or to an effector cell axon
Information flow through neurons