Fiber composition of cranial nerves 感觉 一般躯体运动 特殊内脏运动 一般内脏运动 运动 OI IV VI XI XI 一般内脏感觉 特殊内脏感觉 一般躯体感觉 特殊躯体感觉 混合 VII X 三 X三 十一二三四六运 五七九十混余感
Fiber composition of cranial nerves Ⅰ Ⅱ Ⅷ Ⅲ Ⅳ Ⅵ Ⅺ Ⅻ Ⅴ Ⅶ Ⅸ Ⅹ 感觉 运动 混合 一般躯体运动 特殊内脏运动 一般内脏运动 一般内脏感觉 特殊内脏感觉 一般躯体感觉 特殊躯体感觉 十一二三四六运 五七九十混余感
Visceral motor fiber related ganglions of cranial n. Visceral motor fiber of cranial nn.is parasympathetic n.they are contained inⅢ、VⅦ、IX、Xnn.From CNS to effector,.two neurons are needed.Their cell bodied are situated in brain stem visceral ganglion. Visceral motor fibers innervate smooth muscle,cardiac muscle glands. 内脏运动纤维从脑干发出后必须在副交感节内交换神经元后分布于平滑肌，腺体和血管。 Smooth muscle or glands in visceral organ (e.g.,intestine) Preganglionic neuron Ganglionic -Dorsal root neuron Preganglionic axon (cell body) Postganglionic Autonomic axon ganglion Ventral root Somatic motor neuron Skeletal CNS- (spinal cord) muscle
Visceral motor fiber of cranial nn. is parasympathetic n. & they are contained in Ⅲ、Ⅶ、Ⅸ、Ⅹ nn. From CNS to effector, two neurons are needed. Their cell bodied are situated in brain stem & visceral ganglion. Visceral motor fibers innervate smooth muscle, cardiac muscle & glands. Visceral motor fiber & related ganglions of cranial n. 内脏运动纤维从脑干发出后必须在副交感节内交换神经元后分布于平滑肌,腺体和血管
Visceral motor fiber related ganglions of cranial n. Visceral motor need two neuron from CNS to PNS First-grade neuron Second-grade neuron Smooth m. Preganglionic fiber Postganglionic fiber Cardiac m. Glands. CNS PNS Visceral ganglion Somatic motor need only one neuron from CNS to PNS skeleton m. Copy Right-Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Visceral motor fiber & related ganglions of cranial n. First-grade neuron Second-grade neuron Visceral ganglion CNS PNS Smooth m. Cardiac m. Glands. skeleton m. Somatic motor need only one neuron from CNS to PNS Preganglionic fiber Postganglionic fiber Somatic motor need only one neuron from CNS to PNS Visceral motor need two neuron from CNS to PNS
Sensory fiber related ganglions in cranial nn. Cell body of both somatic sensory visceral sensory neuron are located in sensory ganglion,their peripheral processes distributes to receptor central processes to related sensory nucleui.There are six pairs of sensory ganglions in cranial nn. 内脏和躯体感觉第一级神经元均位于神经节内。 CNS PNS Sensory ganglion Central process Peripheral proscess Copy Right-Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Cell body of both somatic sensory & visceral sensory neuron are located in sensory ganglion, their peripheral processes distributes to receptor & central processes to related sensory nucleui. There are six pairs of sensory ganglions in cranial nn. Sensory fiber & related ganglions in cranial nn. CNS PNS Sensory ganglion Central process Peripheral proscess 内脏和躯体感觉第一级神经元均位于神经节内
Classification of cranial nerves Sensory cranial nerves感觉性are composed entirely of afferent (sensory)nerve fibers bringing sensations the brain I Olfactory nerve嗅神经 ⅡOptic nerve视神经 ⅧVestibulocochlear nerve前庭蜗神经 Motor cranial nerves运动性：are composed entirely of efferent (motor)fibers ⅢOculomotor nerve动眼神经 IV Trochlear nerve滑车神经 VI Abducent nerve外展神经 XI Accessory nerve副神经 XⅫHypoglossal nerve舌下神经 Mixed cranial nerves混合性：possess both sensory&motor fibers V Trigeminal nerve三叉神经 VⅦFacial nerve面神经 IX Glossopharyngeal nerve舌咽神经 X Vagus nerve迷走神经
Classification of cranial nerves • Sensory cranial nerves 感觉性 are composed entirely of afferent (sensory) nerve fibers bringing sensations the brain Ⅰ Olfactory nerve 嗅神经 Ⅱ Optic nerve 视神经 Ⅷ Vestibulocochlear nerve 前庭蜗神经 • Motor cranial nerves 运动性: are composed entirely of efferent (motor) fibers Ⅲ Oculomotor nerve 动眼神经 Ⅳ Trochlear nerve 滑车神经 Ⅵ Abducent nerve 外展神经 Ⅺ Accessory nerve 副神经 Ⅻ Hypoglossal nerve 舌下神经 • Mixed cranial nerves 混合性: possess both sensory & motor fibers Ⅴ Trigeminal nerve 三叉神经 Ⅶ Facial nerve 面神经 Ⅸ Glossopharyngeal nerve 舌咽神经 Ⅹ Vagus nerve 迷走神经