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22 Cards in this Set
- Front
- Back
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A sudden increase compression load on the VC may cause
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rupture of the anulus fibrosus, allowing the nucleus pulposus to herniate into the vertebral canal
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what is Anterior Longitudinal lig
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Broad
On anterior surfaces of bodies & discs Prevents hyperextension |
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what is Posterior longitudinal lig
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Narrower
Runs within vertebral canal Helps prevent hyperflexion |
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what is ligamentum flava
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Between laminae
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movement of the spinal column is primarily from
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compressibility and elasticity of the IV discs
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Which spinal region has the greatest flexion? Greatest Extension?
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The greatest flexion is in the cervical region
The greatest extension is in the lumbar region |
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The distal end of the spinal cord tapers off into the
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CONUS MEDULLARIS (L1/2)
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The spinal nerves roots from the lumbosacral enlargement and from the conus medullaris form a bundle of nerves
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the CAUDA EQUINA
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From the apex of the conus medullaris is a prolongation of the pia mater that attaches to the coccyx
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the FILUM TERMINALE
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what are the 3 layers of the spinal meninges?
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Pia mater, Arachnoid mater, Dura mater
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Describe the Dural Sac
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free within the vertebral canal
terminates at S2 pierced inferiorly by the filum terminale (from pia mater) Distal to the conus medularis contains an enlargement of the subarachnoid space – the Lumbar Cistern |
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In what layer/space in the meninges is CSF found?
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in the subarachnoid space, in between the arachnoid mater and the Pia Mater.
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In what layer/space in the meninges is the subdural space found?
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It is found in between the dura mater and the subarachnoid mater
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Going from superficial to deep, what is the order of meninges one will pierce?
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Dura mater, arachnoid mater, pia mater
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what is continuous with the epineurium?
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the dura mater. it extends along each nerve root and eventually is continuous with the epineurium
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what is the epineurium?
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the outer covering of a peripheral nerve
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what anchors the spinal chord to the dura mater?
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the denticulate ligament
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what anchors the spinal chord to the coccyx?
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the filum terminale
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Where should a lumbar procedure be performed?
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between L3&L4, or L4&L5
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what layers of flesh does the needle pass through when a spinal tap is performed? (in order)
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Skin & superficial fascia
Supraspinous ligament Interspinous ligament Ligamentum flavum Epidural space Dura mater Arachnoid mater |
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the ligamentum flavum connects the
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lamina of adjacent vertebrae
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What is a really important artery for the lower thoracic and lumbosacral region?
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great anterior segmental medullary a. (of Adamkiewicz)
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