ANAT 2646 8 - Cellular Differentiation of the Spinal Cord

ANAT 2646 8 - Cellular Differentiation of the Spinal Cord -...

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Cellular Differentiation of the Spinal Cord Ventricular zone (contains stem cells) Intermediate zone (contains immature neurons and glioblasts) Marginal zone Neural arches - mesenchyme bifid - then fuse to form vertebral spines Meninges Dura Mater Arachnoid membrane Pia Mater Denticulate ligament Subarachnoid space contains CSF Filum terminale Ascent of the Cord Degeneration of the caudal spinal cord (formation of the filum terminale) Rapid growth of vertebral column Nerve Roots Dorsal Ventral Cauda equina Lumbar Cistern Distribution of Spinal Nerves
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Unformatted text preview: Recurrent branch to dura, PLL, and IVD Vertebral facet joints receive processes from the nearest 3 spinal nerves. Dermatomes Strip of skin supplied by an individual spinal nerve C5-T1--Upper limb C4 and T2 -- sternal angle L2-S2--Lower limb L2 and S3--over the gluteal region Overlap does exist Nerve Root Compression Pain in muscles Paresthesia Cutaneous sensory loss (2+) Motor weakness Loss of a tendon reflex Lumbar Puncture To sample CSF, insert needle between L3-L4 or L4-L5...
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ANAT 2646 8 - Cellular Differentiation of the Spinal Cord -...

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