1.Soma Nerve tissue Neurofibrils 8 Nissl body (Chromophil Neurofibril substance,tigroid body) LM:thread-liked dark brown LM:basophilic mass or granules network EM:RER,free ribosome EM:microfilament, Function:produce protein, neurofilament,neurotubule enzyme and neurotransmitter Function:cytoskeleton, participate in substance transport Hui Zhao
Nerve tissue Hui Zhao 1. Soma Nissl body (Chromophil substance, tigroid body) LM: basophilic mass or granules EM: RER, free ribosome Function: produce protein, enzyme and neurotransmitter Neurofibril LM: thread-liked dark brown network EM: microfilament, neurofilament, neurotubule Function: cytoskeleton, participate in substance transport Neurofibrils
2.Process Nerve tissue Axon 树突 Axon hillock,axon terminal 尼氏体 Axolemma,axoplasm 细胞核 No Nissl body and Golgi 侧支 complex 轴突 Function:passes messages away from the cell body to 髓鞘 other neurons,muscles,or glands) Axon Axon 施万细胞核 Dendrite terminals terminals 郎飞结 Dendritic spine 容 Spine apparatus Function:receive stimulation and Spinal D 轴突终末 conduct impulse apparatu Dendritic 骨骼肌纤维 运动终板 into soma spine Dendrite Hui Zhao
Nerve tissue Hui Zhao 2. Process Dendritic spine Spinal apparatus Dendrite Axon Axon hillock, axon terminal Axolemma, axoplasm No Nissl body and Golgi complex Function: passes messages away from the cell body to other neurons, muscles, or glands) Dendrite Dendritic spine Spine apparatus Function: receive stimulation and conduct impulse into soma
2.Process Nerve tissue 粗面内质网 Axonal transport 胞体 Anterograde axonal 高尔基复合体 transport Fast transport 兼有衣小泡 。球形小泡 ●Slow transport @小颗粒小泡 ◎大颗粒小泡 一扁平小泡 ·轴突 Retrograde axonal transport 神经丝 神经微管 滑面内质网 多泡体 轴突终末 突触小泡 Hui Zhao
Nerve tissue Hui Zhao 2. Process Axonal transport Anterograde axonal transport • Fast transport • Slow transport Retrograde axonal transport
Classification of neurons Nerve tissue According to number of processes multipolar;bipolar;pseudounipolar neuron Main types of neurons Bipolar Multipolar Pseudounipolar Dendrites Direction of impulse Axon Axon Axon terminal terminal termina Hui Zhao
Nerve tissue Hui Zhao Classification of neurons According to number of processes multipolar; bipolar; pseudounipolar neuron
Classification of neurons Nerve tissue According to functions sensory neuron;motor neuron;interneuron interneuron grey matter white matter sensory neuron motor neuron sensory nerve fiber skin motor nerve fiber motor end plate sensory nerve ending skeletal muscle Hui Zhao
Nerve tissue Hui Zhao Classification of neurons According to functions sensory neuron; motor neuron; interneuron