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Arteries of brain, posterior cerebral artery, arise from aorta, vertebral…
Arteries of brain
vertebral
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anterior spinal
- supply lower medulla
- supply anterior two-thirds of spinal cord
clinical correlates
- occlusion results in alternating hemiplegia
- ipsilateral paralysis of tongue and face
- contralateral paralysis of extremities
- loss of pain and temperature
-
Carotid
internal carotid artery
supply blood to brain
anterior cerebral artery
- supply blood to frontal and parietal lobe
- travel rostral along the genu of corpus callosum
- arise from internal carotid artery to circle of willis
clinical correlate
- sensory loss
- paralysis in leg,feet, toe
- prefrontal lobe symptoms: disorders of thinking, reasoning, memory and planning, self monitoring
- impaired judgment, executive functioning
- reduced concentration
- acquired sociopatic behavior
middle cerebral artery
- blood supply t entire lateral surface of brain
- direct communication with internal carotid rtery
- runs laterally and emerges through sylvian fissure
- divided into temporal, frontal and parietal branches
clinical correlate
- contralateral hemiplegia
- tactile agnosia
- discriminative touch
- reduced pain and temperature
- aphasia
- reading and writing deficit
- homonymous hemianopsia
external carotid artery
supply blood to face, forehead, oral nasal orbital cavity
basilar
- arise from subclavian artery
- continue ventrolateral surface of medulla and merge at the pons to form singular basilar artery
- immediately after its formation the basilar artery gives rise to:
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vertebral basilar system:
supply blood to spinal cord, medulla, pons, midbrain and cerebellum