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Flashcards in Blood supply to the brain Deck (13):

Internal carotid artery

enters the circle of Willis and divides to form the anterior cerebral and middle cerebral arteries


Anterior cerebral arteries

supplies the medial and superior strip of the lateral aspect of the cerebral cortex up to the parietal/occipital border


Middle cerebral artery

-supplies most of the lateral aspect of the cerebral cortex
-includes Broca and Wernicke's areas in dominant hemisphere


Posterior cerebral artery

-arises from basilar artery and supplies the inferomedial temporal lobe and the occipital lobe


Blood supply to the medulla

-posterior inferior cerebellar arteries and anterior spinal branches of the vertebral arteries


Blood supply to Pons

-supplied by basilar artery that runs along the midline of the pons


Carotid system TIA

-Amaurosis Fugax- blockade of retinal arteries
-Hemisensory loss
-Hemianopic visual loss


Vertebrobasilar TIA

-diplopia, vertigo, vomiting
-choking and dysarthria
-alexia without agraphia
-hemisensory loss
-hemianopic visual loss
-transient global amnesia
-loss of consciousness (rare)


Anterior cerebral artery

-supplies medial suface
-bilateral infract causes quadriparesis (legs weaker than arms) and akinetic mutism (ventromedial or cingulate syndrome)


Recurrent artery of Huebner

-branch of the ACA
-supplies the head of caudate nucleus
-lesion causes agitation, confusion and evolves to akinesia, abulia (absence of willpower), with mutism and personality changes


Anterior branches of the upper division of the middle cerebral artery

-supplies the lateral prefrontal cortex
-lesion causes planning deficits, impairment of working memory and apathy
-DLPFC dysfunction


Anterior communicating artery

-supplies basal forebrain
-lesion causes akinesia and personality change (orbitofrontal dysfunction) with a confabulatory amnesia resembling Wernicke-Korsakoff's syndrome


Posterior inferior cerebellar artery (PICA) thrombosis

- supplies the lateral medulla
-Wallenberg's lateral medullary syndrome
-acute vertigo with cerebellar signs
-Ipsilateral face numbness, diplopia, nystagmus, Horner's syndrome and 9th/10th nerve palsy with contraalateral spinothalamic sensory loss and mild hemiparesis