Neuro: Blood Supply to the Brain

What does the anterior cerebral artery supply?

supplies most of the superior-medial parietal lobes and portions of the frontal lobes with fresh blood

What does the middle cerebral artery supply?

lateral (side) areas of the frontal, temporal, and parietal lobes

What does the posterior cerebral artery supply?

the occipital lobe, the inferior part of the temporal lobe, and various deep structures (thalamus)

What are the components of the circle of willis?

1. anterior cerebral
2. anterior communicating
3. internal carotid
4. posterior cerebral
5. posterior communicating

Vertebral artery.

from subclavian artery, supplies the cerebellum

Posterior inferior cerebellar artery

from vertebral artery; supplies the posteroinferior cerebellum

Basilar artery

from both vertebral; goes to brainstem, cerebellum, cerebrum

Anterior inferior cerebellar artery

from basilar; supplies inferior cerebellum

Superior cerebellar artery

from basilar; supplies superior cerebellum

Posterior and Anterior communicating artery

cerebral arterial circle (of willis)

Internal carotid

from common carotid; supplies cerebral lobes and eye

Describe a subarachnoid hemorrhage.

occurs from a rupture involving one of the branches of the vertebral, internal carotid, or circle of willis arteries