N脊髓（参考）.pptVIP

Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * 皮质脊髓侧束 皮质脊髓前束 Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * ii. ?红核脊髓束 (rubrospinal tract ): 脊髓 (The Spinal Cord ) 红核(red nucleus) 红核脊髓束 屈肌运动神经元 (flexors of motor neurons (γ)) ( lateral Vestibular N ) 前庭脊髓束 伸肌运动神经元 (extensors of motor neurons(γ)) iii. ?前庭脊髓束 (vestibulospinal tract ): 前庭外侧核 中间N元 中间N元 中间N元 Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * iv.网状脊髓束 (reticulospinal tract ): 脊髓 (The Spinal Cord ) v.顶盖脊髓束 (tectospinal tract ): 网状结构 (R.F.) 上丘 (sup.colliculus) 网状脊髓束 顶盖脊髓束 前角运动神经元 (anteriormotor neurons (γ) ) 前角运动神经元 (anterior motor neurons (γ) ) (红核脊髓束,前庭脊髓束,网状脊髓束,顶盖脊髓束):调节肌张力,肌协调 中间N元 中间N元 Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * 功能( Functions): 调解视听刺激对姿势的反射 (To mediate reflex postural movements in response to visual and auditory stimuli ). 脊髓 (The Spinal Cord ) 内侧纵束 vestibular nucleus (前庭神经核) anterior motor neurons (γ) (前角运动神经元) vi.内侧纵束 (medial longitudinal fasciculus ): Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * 4)短纤维束 (Short fasciculi ) i.前固有束 (anterior fasciculus proprius ) ii.外侧固有束 (lateral fasciculus proprius ) iii.后固有束 (posterior fasciculus proprius ) 功能( Functions):不同节段间联系 (intrinsic connection of different segaments ) iv.背外侧束 (dorsolateral fasciculus (Lissauer‘s) ): 不同胶状质间连接 (interconnect different levels of the substantia gelatinosa ) 脊髓 (The Spinal Cord ) Systematic Anatomy Dept of Anatomy, Medical College, Qingdao University * D.脊髓功能 (Functions of spinal cord ) 传导冲动 (Convey impulses ) : 感觉 脊髓 脑 脑 脊髓 躯干四肢运动，大部分内脏运动 反射 (Reflexes ): 1)牵张反射 (stretch (myotactic) reflex ):髌反射 (knee -jerk (patellar) reflex ) 2)屈曲反射 (flexor (withdrawal撤退) reflex ):刺激后-肢体迅速撤回 (to remove a limb from a painful stimulus ) 3)四肢节律性位移反射 (limb’s rythmic movement reflex ) 脊髓 (The Spinal Cord ) Systematic An