Spinal cord and vertebral column
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Created by:
tdelamarter on June 20, 2012
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29 terms
Terms | Definitions |
|---|---|
 spinal cord extends from | brainstem (obex) to conus medullaris (L1,L2) (L2 to be safest) |
| spinal cord length | 2/3rds of vertebral column |
| where are the 2 bulges in the spinal cord | cervical (brachial, cervical plexuses) lumbar (lumnbosacracl plexus) Therefore, more CSF can occur here |
| 3 layers, 3 spaces | ... |
| UL flexor reflex | C56 |
| UL extensor reflex | C78 |
| LL extensor reflex | L234 |
| LL flexor reflex | S12 |
| Boundaries of the vertebral canal | vertebral body/ disc, pedicle, ______, lamina |
| Boundaries of the intervertebral foramen | ... |
| Intervertebral foramen contents | spinal nerve root, dorsal root ganglion, the spinal artery of the segmental artery, communicating veins between the internal and external plexuses, recurrent meningeal (sinu-vertebral) nerves, and transforaminal ligaments. |
| what are the joints between adjacent vertebrae | 2 facet joints: superior and inferior 1 symphisis: secondary cartilaginous joint |
| which ligament attaches transversely from the dens laterally | transverse ligament |
| nucleus pulposus sits where? | in the center, but slightly posterior |
| sacral hiatus is at which level | S5 (in between the sacral cornua) used for nerve blocks |
| lumbar puncture | L4 through ligamentum flavum |
| # vertebrae, # spinal nerves | 33 vertebrae 31 spinal nerves |
| specific spinal nerve breakdowns | 8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal |
| pia mater makes up which two structures | filum terminale denticulate ligament |
| Rami communicantes | communicate between spinal cord and autonomics grey: from ganglia (post ganglionic) white: to ganglia (preganglionic) |
| spinal arteries | 1 anteiror 2 posterior (both from vertebrals, posteirors could be from PICA) |
| segmental/ radicular arteries to spinal arteries come from | vertebrals ascending cervical aa posterior intercostal aa lumbar aa |
| how much from anterior spinal artery | ~85% |
| artery of adamdiewicz | 75% arises from the left between T8 and L1, usually via left intercostal artery |
| dura mater aka: | pachymenix (pachymeninge) |
| arachnoid and pia mater = | leptomeninges |
| epidural space contains | fat and internal (epidural) vertebral plexus |
| subarachnoid space containes | CSF, connective tissue, vessels, spinal nerve rootlets |
| Batson's plexus? | venous plexus in lumbar region that communicates with the venous plexuses in the vertebral column that are valveless (prostate tumor could metastasize through here) |
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