anterior cerebral artery

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an·te·ri·or ce·re·bral ar·ter·y

[TA]
one of the two terminal branches (with middle cerebral artery) of the internal carotid; it passes anteriorly, loops around the genu of the corpus callosum, and then passes posteriorly in the longitudinal fissure along with its fellow of the opposite side, the two being joined by the anterior communicating artery [TA]. For descriptive purposes, it is divided into two parts: 1) the precommunicating part [TA] (A1 segment in clinical terminology), which gives rise to the anteromedial central arteries [TA], consisting of proximal medial striate arteries [TA], the supraoptic artery [TA], anterior perforating arteries [TA], and preoptic arteries [TA] and 2) a postcommunical part [TA] (A2 segment), which gives rise to a distal medial striate artery [TA], medial frontobasal artery [TA], polar frontal artery [TA], and two large terminal branches: the pericallosal artery [TA] and the callosomarginal artery [TA]. The latter two have branches that serve specific regions of the cortex.
Synonym(s): arteria cerebri anterior [TA]

an·te·ri·or ce·re·bral ar·te·ry

(an-tēr'ē-ŏr ser'ĕ-brăl ahr'tĕr-ē) [TA]
One of two terminal branches (with middle cerebral artery) of internal carotid; passes anteriorly, loops around genu of corpus callosum, then passes posteriorly in interhemispheric fissure along with its fellow of opposite side, the two being joined by the anterior communicating artery.
Synonym(s): arteria cerebri anterior.

anterior cerebral artery

An artery that supplies blood to the medial side of the cerebral hemisphere and the corpus callosum; it is part of the circle of Willis, and it branches from the internal carotid artery at the base of the brain. The anterior cerebral artery anastomoses with the contralateral anterior cerebral artery via the anterior communicating artery.
See: brain (Major arteries of the brain) and circle of Willis for illus.
See also: artery

an·te·ri·or ce·re·bral ar·te·ry

(an-tēr'ē-ŏr ser'ĕ-brăl ahr'tĕr-ē) [TA]
One of two terminal branches (with middle cerebral artery) of internal carotid; passes anteriorly, loops around the genu of the corpus callosum, and then passes posteriorly in the longitudinal fissure along with its fellow of the opposite side, the two being joined by the anterior communicating artery [TA].
References in periodicals archive ?
Almost all patients with MIH have a single or azygous anterior cerebral artery.
Oomman A, Madhusudhanam M: "A case of unpaired anterior cerebral artery occlusion producing akinetic mutism.
The anterior cerebral arteries are the major blood supply for the medial surfaces of the cerebral hemispheres.
Due to the high frequency with that aneurysms are observed in the anterior communicant artery and the anterior cerebral artery in the precommunicating segment (A1), we have decided to make an analysis biometrical in them.
The anterior branch bifurcates into medium cerebral artery and anterior cerebral artery, which is not in agreement with Alcantara & Prada (1996a), who report that the internal carotid artery bifurcates into a rostral branch, which branches off into medium cerebral artery and rostral cerebral, and caudal branch, addressing caudally, and performing anastomosis with the basilar artery.
4] In distal occlusion of the anterior cerebral artery, the clinical, picture differs slightly with symptoms including contralateral upper and lower extremity weakness, contralateral sensory loss in the foot and motor and/or sensory aphasia.
Another variant of anterior cerebral artery in the form of 'Azygous anterior cerebral artery' was also well appreciated on T2 images.
Temporary clipping of the anterior cerebral arteries for 5 minutes was required to gain enough operative space.
Doppler measurements during and immediately after clipping confirmed satisfactory blood flow in the ICA, anterior cerebral artery (ACA) and middle cerebral artery (MCA).
ACA= Anterior cerebral artery; MCA = Middle cerebral artery; PCA = posterior cerebral artery.
4) In type A, unilateral absence of the ICA is associated with collateral circulation to the ipsilateral Anterior cerebral artery (ACA) through a patent Anterior communicating artery (ACOM) and to the ipsilateral Middle cerebral artery (MCA) from the posterior circulation through a hypertrophied Posterior communicating artery (PCOM).

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