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The fine anatomy of the human spinal meninges

脑膜 软脑膜 解剖 轻浮 硬脑膜 蛛网膜下腔 脊髓 医学 结缔组织 病理 中枢神经系统 脑脊液 精神科 内分泌学
作者
D. Nicholas,Roy O. Weller
出处
期刊:Journal of Neurosurgery [Journal of Neurosurgery Publishing Group]
卷期号:69 (2): 276-282 被引量:176
标识
DOI:10.3171/jns.1988.69.2.0276
摘要

✓ The fine anatomy of the human spinal meninges was examined in five postmortem spinal cords taken within 12 hours after death from patients aged 15 months to 46 years. Specimens of spinal cord were viewed in transverse section and from the dorsal and ventral aspects by scanning electron microscopy. Transverse sections of spinal cord and meninges were also examined by light microscopy. The arachnoid mater was seen to be closely applied to the inner aspect of the dura. An intermediate fenestrated leptomeningeal layer was observed attached to the inner aspect of the arachnoid mater and was reflected ventrally to form a series of dorsal septa. As it arborized laterally over the surface of the cord to surround nerves and blood vessels, the intermediate layer became highly fenestrated but remained distinct from the pia and arachnoid mater. The pia mater appeared to form a continuous layer which was reflected off the surface of the cord to coat blood vessels within the subarachnoid space in a manner similar to that described in the leptomeninges over the human cerebral cortex. Each dentate ligament consisted of a collagenous core which was continuous with the subpial connective tissue and was attached at intervals to the dura; pia-arachnoid cells coated the surface of the dentate ligaments. The present study suggests that the fine anatomy of the human spinal meninges differs significantly from that described in other mammals.

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