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22 Cards in this Set
- Front
- Back
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What are the main arteries of the brain?
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2 internal carotid and 2 vertebral arteries
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What is the name of the place where the 4 arteries anastomose?
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Circle of Willis
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After the carotid artery enters the carotid canal of the temporal bone, where does it pass?
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cavernous sinus > medial side of anterior clinoid process (perforating dura mater) > subarachnoid space (piercing arachnoid mater)
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Where does the ophthalmic artery arise and then go?
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Arises as internal carotid artery emerges from the cavernous sinus > enters orbit through optic canal below and lateral to optic nerve
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What does the opthalmic artery supply?
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eye
frontal area of scalp ethmoid sinus frontal sinus dorsum of nose |
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Where does the posterior communicating artery arise and where does it go?
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Arises: close to termina bifurcation of internal carotid artery > runs above oculomoter nerve > joins posterior cerebral artery (forms circle of willis)
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What arteries compose the Circle of Willis? (8)
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Anterior communicating artery, anteriror cerebral arteries, L + R internal carotid arteries, posterior communicating arteries, posterior cerbral arteries, basilar artery.
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Where does the choroidal artery arise and where does it go?
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arises behind bifurcation of internal carotid > optic tract > inferior horn of lateral ventricle, choroid plexus.
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What does the choroidal artery supply?
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crus cerebri, lateral geniculate body, optic tract, internal capsule
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How does the anterior cerebral artery run?
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above optic nerve > longitudinal fissure of cerebrum > joins with ant cereb artery of other side via anterior communicating artery > corpus collosum > anastomoses w/ posterior cerebral artery.
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What does the anterior cerebral artery supply?
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Its cortical branches supply: medial surface of cerebral cortex, lateral surface of cortex, "leg area" of precentral gyrus
Its central branches supply: lentiform and caudate nuclei, internal capsule |
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How does the middle cerebral artery run?
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Laterally in lateral cerebral sulcus
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What does the middle cerebral artery supply?
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Cortical branches: entire lateral surface of hemisphere- mostly motor (except for lil bit supplied by ant cereb artery and occipital pole and inferolateral surface supplied by post cereb artery)
Central branches: lentiform and caudate nuclei and internal capsule. |
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What does the vertebral artery pass through?
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The foramina in the transverse processes of the upper SIX cervical vertebrae > foramen magnum > dura mater > arachnoid > subarachnoid space > forms basilar artery.
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What do the meningeal branches supply?
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bone and dura in posterior cranial fossa
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What is the anterior spinal artery formed from?
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By a contributory branch from each vertebral artery near its termination.
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What does the posterior inferior cerebellar artery supply? (5)
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inferior surface of vermis, central nuclei of cerebellum, undersurface of cerebellar hemisphere, medulla oblongata, choroid plexus of 4th ventricle.
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What is the basilar artery formed from?
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The union of 2 vertebral arteries.
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What does the labyrinthine artery supply? (1)
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Internal ear
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What does the anterior inferior cerebellar artery supply? (2)
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anterior and inferior parts of the cerebellum.
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What does the superior cerebellar artery supply? (4)
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superior surface of cerebellum, pons, pineal gland, superior medullary velum.
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What does the posterior cerebral artery supply?
Cortical branches: (4) Central: (5) Choroidal: (2) |
cortical branches: inferolateral and medial surfaces of the temporal lobe, lateral and medial surfaces of the occipital lobe (vision)
central: thalamus, lentiform nucleus, midbrain, pineal, and medial geniculate bodies. choroidal: choroid plexus, choroid plexus of 3rd ventricle |
