Introduction 3) Reticular formation:网状结构 a field of intermingled grey and white matter, and with larger or smaller groups of nerve cells occupying the meshes Medial longitudinal fas siculus Hypoglossal nucleus Inferior medullary velum y Nucleus of tractus x Medial vestibular nucleus solitarius Posterior cochlear nucleus Inferior vestibular Reticular formation nucleus Inferior cerebellar Spinal tract an peduncle nucleus of trigeminal nerve Anterior cochlear Nucleus ambiguus - vagus nerve Antenor, spinocerebellar tract Dorsal olivary nucleus spinothalamic tract - Inferior T tectospinal tract olivary nucleus Medial lemniscus Medial accessory livary nucleus Anterior median fissure Arcuate nucle/ Pyramid Hypoglossal nerve
3) Reticular formation: 网状结构 a field of intermingled grey and white matter , and with larger or smaller groups of nerve cells occupying the meshes. Introduction
Introduction (2)PNs周围神经 on spinale 1) Ganglion:神经节 a collection of neuron cell bodies outside the cns Radix ventralis 夏腔神经节 交感干 2) Nerve:神经 a bundle of nerve fibers held together by connective tissue sheath
Introduction (2) PNS 周围神经 1) Ganglion:神经节 a collection of neuron cell bodies outside the CNS 2) Nerve:神经 a bundle of nerve fibers held together by connective tissue sheath
Brain Medulla oblongata The Spinal Cervical Cord Lumbosacral 脊髓
The Spinal Cord 脊 髓
延髓 The Spina|Cord脊 medulla oblongata 蛛网膜 arachnoid mater 后根根丝 posterior rootlets Position. a lies in vertebral canal a continuous with medulla oblongata at level of foramen magnum o ends at the lower border of l1 口 at birth, ends at the level of l3 S1 s1
The Spinal Cord 脊髓 Position: lies in vertebral canal continuous with medulla oblongata at level of foramen magnum ends at the lower border of L1; at birth , ends at the level of L3
The Spinal Cord Substantia alba Radix posterior 2. External features外形 entralis anterior Radix ante x A long cylindrical structure 218.脊髓和脊神经根 Spinal cord and roots of spinal nerves slightly flattened anteroposteriorly 呈前后稍扁的圆柱形 许圆锥 次 conus medullaris脊髓圆锥 k filum terminale终丝
2. External features 外形 ＊ A long cylindrical structure slightly flattened anteroposteriorly 呈前后稍扁的圆柱形。 ＊ conus medullaris 脊髓圆锥 ＊ filum terminale 终丝 The Spinal Cord