Arteries of brain

Carotid

basilar

vertebral

internal carotid artery

external carotid artery

supply blood to face, forehead, oral nasal orbital cavity

supply blood to brain

anterior cerebral artery

middle cerebral artery

posterior cerebral artery

  1. supply blood to frontal and parietal lobe
  2. travel rostral along the genu of corpus callosum
  3. arise from internal carotid artery to circle of willis

clinical correlate

  1. sensory loss
  2. paralysis in leg,feet, toe
  3. prefrontal lobe symptoms: disorders of thinking, reasoning, memory and planning, self monitoring
  4. impaired judgment, executive functioning
  5. reduced concentration
  6. acquired sociopatic behavior
  1. blood supply t entire lateral surface of brain
  2. direct communication with internal carotid rtery
  3. runs laterally and emerges through sylvian fissure
  4. divided into temporal, frontal and parietal branches

clinical correlate

  1. contralateral hemiplegia
  2. tactile agnosia
  3. discriminative touch
  4. reduced pain and temperature
  5. aphasia
  6. reading and writing deficit
  7. homonymous hemianopsia
  1. bifurcation of basilar artery ❌
  2. blood supply to occipital, temporal, primary visual cortex and hyppocampus
  3. also called posterior communicating artery
  4. blood supply to midbrain

clinical correlate

  1. visual agnosia
  2. total blindness
  3. homonymous hemianopsia
  4. memory impairment

arise from aorta

  1. arise from subclavian artery
  2. continue ventrolateral surface of medulla and merge at the pons to form singular basilar artery
  3. immediately after its formation the basilar artery gives rise to:

anterior inferior cerebellar artery

pontine arteries

  1. serves anterior and lateral surface of cerebellum
  2. deliver blood to inner ear
  3. branches into the labyrinthine (internal auditory)artery

clinical correlate

  1. ipsilateral deafness
  2. vestibular dusfunction (vertigo) and tendency to fall on the affected side

supply internal structures

vertebral basilar system:
supply blood to spinal cord, medulla, pons, midbrain and cerebellum

posterior spinal

anterior spinal

posterior inferior cerebellar

• Immediately prior to the basilar artery joins the circle of Willis it forms

Superior Cerebellar Artery

1. serve the cerebellum

clinical correlates

  1. motor incoordination
  2. impaired balance
    3.dysarthria
  1. supply lower medulla
  2. supply anterior two-thirds of spinal cord

clinical correlates

  1. occlusion results in alternating hemiplegia
  2. ipsilateral paralysis of tongue and face
  3. contralateral paralysis of extremities
  4. loss of pain and temperature

supply dorsal surface of the cord

clinical correlate
loss of discriminative touch