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anterior cerebral artery
The smaller of 2 terminal branches of internal carotid artery (the middle cerebral artery is the larger branch). The anterior cerebral artery is divided into 2 parts: A1: proximal to the anterior communicating artery A2: distal to the anterior communicating artery
Origin: internal carotid artery
Branches:
A1: (proximal)
-> anteromedial central arteries
a) proximal medial striate arteries
b) supraoptic arteries
c) anterior perforating arteries
d) preoptic arteries
A2: (distal)
1) distal medial striate artery
2) medial frontobasal artery
3) polar frontal artery
4) two large terminal branches
a) pericallosal artery
b) callosomarginal artery
Distribution:
1) supplies medial portions of frontal & parietal lobes & corpus callosum
2) branches supply medial portion of orbital surface of the frontal lobe including olfactory bulb & tract
Anastomoses:
-> the right & left joined by anterior communicating artery
Course:
1) passes anteriorly, loops around the genu of the corpus callosum
2) passes in the interhemispheric fissure on either side
Related
anterior cerebral artery syndrome
anterior communicating artery
General
blood vessel
Properties
FORM: anterior cerebral artery
BRANCHES: pericallosal artery
callosomarginal artery
medial striate artery (recurrent artery of Huebner)
ORIGIN: internal carotid artery (ICA)
References
- Grant's Atlas of Anatomy, 10th edition, AMR Agur & MJ Lee (eds),
Lippincott Williams & Wilkins, Philadelphia, 1999
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
Components
intima; tunica intima
tunica media
vascular endothelium