Term
| dura mater, arachnoid mater, pia mater |
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Definition
| list the meningeal layers |
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Term
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Definition
| toughest, fibrous, most external meningeal layer |
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Term
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Definition
| fragile filmy layer of meninges, looks like red cellophane |
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Term
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Definition
| extension of the pia mater that helps stabilize the spinal cord |
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Term
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Definition
| meningeal layer that sits directly on the spinal cord, glossy coating, cannot be dissected away |
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Term
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Definition
| location of venous plexus and fat, outside the meninges but inside the bone |
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Term
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Definition
| space between dura and arachnoid (not a real space, but has no CT in it) |
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Term
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Definition
| space between arachnoid and pia |
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Term
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Definition
| space that contains the CSF, continuous with brain space (encloses all CNS) |
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Term
| internal vertebral plexus |
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Definition
| venous plexus in the vertebrae that goes to both head and pelvic organs,drains bone, CT, muscle, dura, spinal nerves and has no valves. Clinically important as it can be the route of pelvic cancer metasteses to the brain or spine(ex: ovarian or prostate) |
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Term
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Definition
| a band of fibrous pia mater extending along the spinal cord on each side between the dorsal and ventral roots(attaches to arachnoid and dura) |
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Term
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Definition
| root that carries sensory information from the environment to the CNS |
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Term
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Definition
| root that carries motor information from the CNS to muscles and glands, controlling their functions |
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Term
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Definition
| small toothlike process (attachment site for denticulate ligament) |
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Term
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Definition
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Term
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Definition
| in a fetus the spinal cord, meninges, and vertebral column are all _____ |
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Term
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Definition
| in an adult, compared to the fetus, there is more/less space between lumbar vertebra? |
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Term
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Definition
| in adults(compared to the fetus) the nerve roots in the lumbar and sacral area are longer/shorter/the same |
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Term
| vertebra grow and take meninges with it |
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Definition
| what 2 things in the adult grow longer (vertebrae, meninges, spinal cord) |
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Term
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Definition
| name of the tapered end of the spinal cord |
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Term
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Definition
| made of pia mater, stabilizes the spinal cord from below (stretches from conus medularis to bottom of dural sac) |
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Term
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Definition
| location of nerve roots below the spinal cord |
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Term
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Definition
| lowest point of subarachnoid space (dural sac) |
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Term
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Definition
| all 3 layers of dura fused together, anchors dural sac to the coccyx |
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Term
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Definition
| The membranous sac that encases the spinal cord within the bony structure of the vertebral column, ends at S2 |
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Term
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Definition
| name of bundle of nerve root "tails" at end of spinal cord |
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Term
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Definition
| covers nerve roots of cauda equina |
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Term
| when deprived of oxygen, neural tissue starts dying quickly (5 min or less will cause irreverible damage) |
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Definition
| why spinal cord has a redundant blood supply |
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Term
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Definition
| major blood vessel to brain,, flows up through foramen magnum, it branches off the subclavian artery. Has branches on both sides of anterior spinal column, in neck region only. |
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Term
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Definition
| important branch of distal spinal cord (usu. from left side at L2) identified by being the largest of the segmental arteries at the end of the spine. |
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Term
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Definition
| Important artery in abdominal surgery. Disrupted blood flow could cause spinal cord injury leading to paraplegia or pelvic organ issues. |
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Term
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Definition
| communication between vessels(like a junction) |
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Term
| anterior/posterior spinal arteries |
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Definition
| unpaired/paired arteries that arise from the vertebral arteries, reinforced(form anastomoses) by segmental arteries of the trunk(run length of spinal cord in parallel) |
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Term
| anterior and posterior medullary arteries |
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Definition
| segmental arteries that reach the spinal cord and anastomose with the spinal artery |
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Term
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Definition
| short, segmental arteries that reach the spinal nerve root |
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Term
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Definition
| segmental arteries that reach both the spinal nerve roots and the spinal cord (and medulla) |
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Term
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Definition
| neural tube defect, presents with normal meninges, may have missing vertebral arches, tuft of hair |
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Term
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Definition
| neural tube defect where meninges (dura and arachnoid) are herniated out |
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Term
| meningiocele (spina bifida cystica at base of spine) |
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Definition
| neural tube defect (at base of spine or skull) where meninges are herniated, dura, arachnoid, and sub arachnoid space herniate out, but nerve root is intact |
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Term
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Definition
| neural tube defect where dura, and arachnoid meninges herniate outward, nerve herniates too |
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Term
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Definition
| NT defect where meninges, CSF and brain are herniated |
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Term
| meningohydroencephalocele |
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Definition
| NT defect where CSF, meninges, brain, and ventricles are herniated |
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