第28章神经系统的发生 Development of Nerve system 肖岚 基础医学院组胚教研室 Te∴:771315 E-mail: xiaolan 35@tmmu edu cn R 1量同
第28章 神经系统的发生 Development of Nerve system 肖 岚 基础医学院组胚教研室 Tel: 771315 E-mail: xiaolan35@tmmu.edu.cn
Nervous System: Overview CENTRAL NERVOUS SYSTEM, POSTERIOR VIEW Cranium Cerebral ◆中枢神经系统(CNS) Brain Cervical spinal nerves Spinal cord ◆周围神经系统(PNS) Thoracic spinal Nerve outside of the Lumbar spinal Sectioned nerves brain and spinal cord Sacral spinal nerves Coccygeal nerve
Nervous System: Overview 中枢神经系统 (CNS) Brain Spinal cord 周围神经系统 (PNS) Nerve outside of the brain and spinal cord
神经系统的组织成分: >神经细胞( nerve cel) 约1012个,也称神经元( neuron),接受刺激、 整合信息和传导冲动 >神经胶质细胞( neuroglial cell 数量为神经元的10~90倍,对神经元起支持、保 护、营养和绝缘等作用
神经系统的组织成分: ¾神经细胞(nerve cell) 约1012个,也称神经元(neuron),接受刺激、 整合信息和传导冲动. ¾神经胶质细胞(neuroglial cell) 数量为神经元的10~90倍,对神经元起支持、保 护、营养和绝缘等作用
Evolution of the Nervous System Nerve Primitive brain n Primitive brain Nerve cords Mouth Subpharyngeal Ventral nerve cord Esophagus with ganglia (a) Nerve net of jellyfish (b) The flatworm nervous system has a (c)The earthworm nervous system has a primitive brain simple brain and ganglia along a nerve cord Forebrain Forebrain Forebrain (d)The fish forebrain is small (e) The goose forebrain is larger. (f) The human forebrain(cerebrum) compared to remainder of brain dominates the brain
Evolution of the Nervous System
无脑儿、脊柱裂
无脑儿、脊柱裂