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Chp 14
Spinal Cord & Spinal Meninges
| Question | Answer |
|---|---|
| white matter | nerve fibers, axons |
| gray matter | neurons |
| conus medullaris | end of spinal cord (usually between LV1 and LV2) |
| dorsal root ganglia | collection of neuronal cell bodies outside of CNS |
| dorsal root | SENSORY; has rootlets |
| ventral root | MOTOR |
| spinal nerve | MIXED; divides into ventral primary ramus and dorsal ramus |
| these are caudal to the conus medullaris | ventral and dorsal roots |
| all plexuses are made up of... | ventral primary rami |
| innervate all muscles of upper limb and skin of upper | ventral primary ramus |
| cauda equina | ventral and dorsal roots caudal to the conus medullaris |
| epidural space | space between dura and bone (vertebra) |
| contains FAT and VENOUS blood vessels | epidural space |
| this is caudally continuous to the level of sacral vertebra 2 | dura mater |
| beyond SV2 this is continuous as the coccygeal ligament | dura mater |
| subdural space | space between dura and arachnoid |
| this contains cerebral spinal fluid (CSF) | subarachnoid space |
| dermatome | area of skin innervated by 1 spinal nerve |
| shingles follow this pattern | dermatomal |
| the brain does not have this, only found in spine | epidural space |
| filum terminale pia | extends to S2 to dura/arachnoid |
Created by:
afogel
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