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23 Cards in this Set
- Front
- Back
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What are the branches of the external cerebral vein?
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-superior cerebral veins
-superficial middle cerebral vein -deep middle cerebral vein -anterior cerebral vein -basal vein |
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where do the superior cerebral veins empty into?
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superior sagittal sinus
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what results from damage to the superior cerebral veins?
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head trauma can tear these veins and lead to subdural hemorrhage
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what forms the Basal vein of Rosenthal (aka the Basal Vein)?
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The Anterior Cerebral Veins
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where does the basal vein empty into?
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the Great Cerebral Vein
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What are the branches of the Internal Cerebral Veins?
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-Thalamostriate vein
-Choroidal Vein -Internal Cerebral Vein -Great Cerebral Vein of Galen |
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What runs posterior in the transverse fissure?
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the Internal Cerebral Vein
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where do the 2 internal cerebral veins unite and where do they drain into?
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they unite in the posterior part of the corpus callosum
they drain into the great cerebral vein with the basal vein |
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What are the 2 categories of stroke?
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1. Hemorrhage
2. Occlusive |
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What are types of hemorrhages?
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hypertension and aneurysm
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what are the types of occlusive strokes?
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atherosclerosis and thrombosis
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What is Ischemia?
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-an insufficient blood supply
-can be transient or prolonged (i.e. transient ischemic attack- mini stroke) |
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What is Infarction?
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loss of blood supply with death of neural tissue
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ACA infarction
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-paralysis and sensory deficits in the contralateral leg and perineum
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MCA stroke
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-contralateral paralysis in the lower part of the face and arm; with sensory deficits within the cortex (aphasia, Wernike and Broca's area deficits for middle cerebral artery infarction)
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what is aphasia?
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difficulty communicating
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what types of aphasia are there?
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1. receptive aphasia= they can't understand
2. expressive aphasia= they can't communicate |
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what can cause a Coma?
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bilateral infarctions of the posterior cerebral arteries (PCA)
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what are the 7 extrinsic eye muscles?
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-levator palpebrae superioris
-superior rectus -inferior rectus -lateral rectus -medial rectus -superior oblique -inferior oblique |
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What muscle is innervated by CN IV?
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superior oblique (CN IV aka the trochlear nerve)
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What muscle is innervated by CN VI?
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Lateral rectus (CN VI aka abducens nerve)
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What are the majority of the extrinsic eye muscles innervated by?
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CN III (Oculomotor)
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out of the 7 extrinsic muscles of the eye, which is not a true extrinsic eye muscle?
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Levator palpebrae superioris
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