Thompson F J, Yates B J
J Auton Nerv Syst. 1986 Mar;15(3):245-61. doi: 10.1016/0165-1838(86)90067-6.
The present studies were done to determine details of the anatomical and physiological characteristics of femoral-saphenous venous afferent input to the lumbar spinal cord. Gross anatomical examination revealed that afferent bundles could be seen coursing from the saphenous nerve to the femoral-saphenous vein. Compound action potentials elicited by femoral-saphenous venous afferent stimulation were recorded from the femoral nerve and in dorsal rootlets of the 6th lumbar cord segment. The compound action potentials included activity correlated with that of fibers conducting impulses at the rate of 31 to 61 m/s. Lumbar cord dorsum potentials elicited by femoral-saphenous venous afferent stimulation were abolished by rhizotomy of the most caudal rootlets of the 6th lumbar cord segment. L6 was also the cord segment from which the largest amplitude cord dorsum negative potentials were recorded, while action potentials with large late positive waves were recorded from more caudal cord segments. These observations suggested that the L6 segment contained the largest number of spinal neurons responding to primary femoral-saphenous venous afferent input, and that input reached the more caudal segments via intersegmental connections. A proposed physiological role of these afferents is briefly described.
本研究旨在确定股隐静脉传入至腰脊髓的解剖学和生理学特征细节。大体解剖检查发现，传入束可从隐神经延伸至股隐静脉。通过刺激股隐静脉传入神经诱发的复合动作电位，从股神经以及第6腰髓节段的背根小束记录。复合动作电位包括与传导速度为31至61米/秒的纤维活动相关的成分。切断第6腰髓节段最尾侧的根丝后，由股隐静脉传入神经刺激诱发的腰髓背电位消失。L6也是记录到最大振幅腰髓背负电位的节段，而在更尾侧的脊髓节段记录到带有大的晚期正波的动作电位。这些观察结果表明，L6节段含有对股隐静脉初级传入输入作出反应的脊髓神经元数量最多，且该输入通过节段间连接到达更尾侧的节段。文中简要描述了这些传入神经的推测生理作用。
