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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What artery supplies the anterior 2/3 of the SC and the Ventral-Medial Medulla?
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The anterior spinal Artery
Where do these come from? |
they are medial branches from the vertebral arteries that join
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What artery supplies the posterior 1/3 of the spinal cord as it courses in the dorsal lateral sulcus?
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the posterior spinal arteries
where do these come from? |
in 75% of people, its a branch of PICA
in the others its a branch of the Verebral Artery |
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What arteries supply the anterior and posterior roots?
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the anterior radicular and posterior radicular arteries
where do these come from? |
segmental arteries
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What large spinal medullary artery supplies the lower thoracic and upper lumbar segments about the level of L2 and should be avoided during surgery
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artery of Adamkiewicz
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What is a network of vessels from arterial branches that reduce the likelihood of ischemia?
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arterial vasocorona
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Occlusion of the anterior spinal artery causes what deficits?
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reduce pain & temperature sensations and weakness BILATERALLY below the lesion (anterolateral system and lateral corticospinal tract)
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Occlusion of one of the posterior spinal arteries causes what deficits?
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reduction of touch and vibration (dorsal columns)
and possible weakness in the lower half of the body below the lesion IPSILATERALLY |
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What supplies the Ventromedial Medulla?
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Anterior spinal A
What is the major structure affected in the lower medulla? Upper medulla? |
LM: pyramidal decussation (motor)
UM: pyramids medial lemniscus hypoglossal nerve and nucleus |
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What supplies the ventrolateral medulla?
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the Vertebral A
What are the major structures affected in the lower medulla? Upper medulla? |
LM: most of the spinal trigeminal tract and nucleus
dorsal and ventral spinocerebellar tracts anterolateral system UM: Inferior olivary nucleus Anterolateral system Lateral reticular nucleus |
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What supplies the Dorsolateral Medulla? (Lower Medulla)
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Posterior Spinal A
What are the major structures affected? |
LM & UM: gracile and cuneate nuclei and fasciculi
LM only: parts of the spinal trigeminal nucleus and tract |
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Besides the Posterior Spinal Artery, what supplies the Dorsolateral Medulla at the sensory decussation?
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PICA
What structures are affected? |
spinal trigeminal tract and nucleus
dorsal and part of the ventral spinocerebellar tracts part of the cuneate nucleus and fasciculus |
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What Cranial Nerves are located in the Ambient Cistern?
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CN IV
What arteries and veins are located in the Ambient Cistern |
AA: Posterior cerebral, Quadrigeminal, Superior Cerebellar
V: Basal *The Crus Cerebri is also located here |
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What CN are located in the Inferior Cerebellopontine Cistern?
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IX, X, XI, XII
What AA and VV are located in the Inferior Cerebellopontine Cistern? |
AA: Vertebral, Proximal PICA
VV: Retro-olivary, lateral medullary **The pyramid, olive, and chroid plexus are also located here |
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What CN are located in the Superior Cerebellopointe Cistern?
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V, VII, VIII
What AA and VV are located in the Superior Cerebellopontine Cistern? |
AA: AICA, Labrythine, Basilar
VV: Pontomesenphalic, Petrosal |
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What CN are located in the Cisterna Magna?
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None (The roots of C1 and C2)
What AA and VV are located in the Cisterna Magna? |
AA: PiCA, Posterior Spinal
VV: Tonsillar, Dorsal Medullary |
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What CN are located in the Interpeduncular Cistern?
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CN III
What AA and VV are located in the Interpeduncular Cistern? |
AA: Basilar, Post. Cerebral, Choroidal, Thalamogenicular
VV: Basal **the Mammilary body and crus cerebri are located here |
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What CN are located in the Prepontine Cistern?
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CN VI
What AA and VV are located in the here? |
AA: Basilar
VV: Pontine |
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What CN are located in the Quadrigeminal Cistern?
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CN: IV
What AA and VV are located in the here? |
AA: Posterior Cerebral, Quadrigeminal, Choroidal
VV: Great Cerebral **Also the Pineal, Superior and Inferior Colliculi are here |
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What CN are located in the Chiasmatic Cistern?
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CN II (optic chiasm)
What AA here? |
Opthalmic
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