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ANAT 2647 Spinal Cord - PNS - cx1,cx2 Spinal Arachnoid •...

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Ascent of the Cord • Degeneration of the caudal spinal cord (formation of the filum terminale) • Rapid growth of vertebral column
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Lumbar Puncture • To sample CSF, insert needle between L3- L4 or L4-L5
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• Dura Mater – Single layered – Suspended in the vertebral canal • Epidural Space – Real space between dura and vertebral periosteum • Arachnoid – Attached to inner surface of Dura • Pia mater – Attached to spinal cord surface Expanded as denticulate ligament
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Spinal Dura • One layer • Epidural fat and a plexus of veins separates it  from the vertebral periosteum • Ends at S2
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Unformatted text preview: cx1,cx2 Spinal Arachnoid • Potential subdural space • Trabeculae suspends the spinal cord • Lumbar cistern L2-S2 Spinal Pia • Filum terminale • 21 Denticulate ligaments attach to dura from foramen magnum to below tv12 Nerve Roots • Dorsal • Ventral • Cauda equina • Lumbar Cistern Distribution of Spinal Nerves • Recurrent branch to dura, PLL, and IVD • Vertebral facet joints receive processes from the nearest 3 spinal nerves....
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