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14 Cards in this Set
- Front
- Back
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cauda equina
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collection of nerve roots descending from spinal cord
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conus medullaris
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tapered portion of cord
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Filum terminalae
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vestigal remnant of caudal spinal cord
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Spinal meninges
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Dura Mater; Arachnoid Mater; Pia Mater
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Subarachnoid Space
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Enclosed by arachnoid mater; contains CSF
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Epidural Space
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found between dura mater and vertebral canal; contains fat and venous plexus
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Internal Venous Plexus
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Drains blood from veins on surface of spinal cord and from vertebral arteries
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Arterial Supply to spinal cord
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Vertebral Artery
Intercostal Arteries |
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Vertebral Artery
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Supplies blood to spinal cord
gives rise to one anterior spinal artery and two posterior spinal arteries, which run longitudinally |
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Posterior Intercostal Arteries
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Arise from aorta, give rise to spinal (helper) arteries that enter IV foramen.
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Spinal arteries
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"helper arteries" that enter IV foramen and branch off into radicular arteries to perfuse nerve roots.
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Artery of Adamkiewicz
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largest of segmental medullary arteries, helps reinforce blood flow to lower 2/3 spinal cord
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Segmental Medullary Arteries
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8-10 large spinal arteries that merge with longitudinal spinal arteries to help beef up blood supply to cord.
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Spinal Tap
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Needle at L3-L5
supraspinous lig interspinous lig ligamentum flavum dura/arachnoid mater into subarachnoid space |
