Anterior cerebral artery

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Artery: Anterior cerebral artery
Outer surface of cerebral hemisphere, showing areas supplied by cerebral arteries. (Blue is region supplied by anterior cerebral artery.)
The arterial circle and arteries of the brain. The anterior cerebral arteries (top of figure) arise from the trifurcations of the internal carotid arteries into the anterior cerebral artery, middle cerebral artery and posterior communicating artery on each side.
Latin	arteria cerebri anterior
Gray's	subject #146 571
Supplies	cerebrum
Source	internal carotid artery
Vein	cerebral veins
MeSH	Anterior+Cerebral+Artery

In human anatomy, each anterior cerebral artery supplies oxygen to most medial portions of frontal lobes and superior medial parietal lobes. The 2 anterior cerebral arteries arise from the internal carotid artery and are part of the Circle of Willis.

The left and right anterior cerebral arteries are connected by the anterior communicating artery.

[edit] Areas supplied

Areas supplied by the anterior cerebral artery include:^{[citation needed]}

1. The medial surface of the frontal lobe by the medial orbito-frontal artery, and parietal lobes
2. The anterior four- fifths of the corpus callosum
3. Approximately 1 inch of the frontal and parietal cortex
4. Anterior portions of the basal ganglia and internal capsule
5. Olfactory bulb and tract

[edit] Occlusion

Occlusion of the anterior cerebral artery may result in the following defects:^{[citation needed]}

1. If stroke occurs prior to the anterior communicating artery it is usually well tolerated secondary to collateral circulation
2. Paralysis of the contralateral foot and leg
3. Sensory loss in the contralateral foot and leg
4. Left sided strokes may develop transcortical motor aphasia
5. Gait apraxia
6. Urinary incontinence which usually occurs with bilateral damage in the acute phase

[edit] Additional images

Location of cerebral cortex

The arteries of the base of the brain. Anterior cerebral artery near top. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side. Inferior aspect (viewed from below).

Diagram showing origins of the main branches of the carotid arteries.

Medial surface of cerebral hemisphere, showing areas supplied by cerebral arteries.

[edit] External links

• MedEd at Loyola Neuro/neurovasc/navigation/aca.htm
• SUNY Labs 28:09-0218
• Atlas of anatomy at UMich n3a8p1
• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-1
• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-3
• Blood supply at neuropat.dote.hu

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