middle cerebral artery


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Related to middle cerebral artery: anterior cerebral artery, posterior cerebral artery

mid·dle ce·re·bral ar·ter·y

[TA]
one of the two large terminal branches (with anterior cerebral artery) of the internal carotid artery; it passes laterally around the pole of the temporal lobe, then posteriorly in the depth of the lateral cerebral fissure; for descriptive purposes it is divided into three parts: 1) the sphenoidal part (M1 segment of clinical terminology), supplying perforating branches to the internal capsule, thalamus, and striate body; 2) the insular part, supplying branches to the insula and adjacent cortical areas; and 3) the terminal part or cortical part, supplying a large part of the central cortical convexity (the latter two collectively forming M2 segment).
Synonym(s): arteria cerebri media [TA]

middle cerebral artery

the largest of the cerebral arteries and the vessel most commonly affected by cerebrovascular accident.

mid·dle ce·re·bral ar·te·ry

(mid'el ser'ĕ-brăl ahr'tĕr-ē) [TA]
One of the two large terminal branches (with the anterior cerebral artery) of the internal carotid artery; it passes laterally around the pole of the temporal lobe, then posteriorly in the depth of the lateral cerebral fissure.
Synonym(s): arteria cerebri media.

middle cerebral artery

Abbreviation: MCA
The continuation of the internal carotid artery beyond the circle of Willis. It runs along the lateral (Sylvian) fissure between the frontal and temporal lobes. Branches of the middle cerebral artery supply blood to the frontal, orbital, parietal, and temporal lobes of the brain. Strokes involving the middle cerebral artery often result in sensory deficits and muscle weakness on the contralateral side of the body; when a middle cerebral artery stroke is in the dominant side of the brain, the patient can also have aphasia.
See: brain (Major arteries of the brain) and circle of Willis for illus.
See also: artery
References in periodicals archive ?
Malignant middle cerebral artery territory infarction: Clinical course and prognostic signs.
Abbreviations: ATP, adenosine triphosphate; CAT, catalase; CCA, common carotid artery; ECA, external carotid artery; GSH-PX, glutathione peroxidase; ICA, internal carotid artery; ICVD, ischemic cerebrovascular disease; MCAO, Middle Cerebral Artery Occlusion; MDA, malondialdehyde; NO, nitric oxide; NOS, nitric oxide synthase; SOD, superoxide dismutase; TrC, 2,3,5-triphenyltetrazolium chloride; V.
A frontal branch of the middle cerebral artery is identified and isolated.
PROACT: A Phase II randomized trial of recombinant pro-urokinase by direct arterial delivery in acute middle cerebral artery stroke--PRO-ACT Investigators: Prolyse in Acute Cerebral Thromboembolism.
The middle cerebral artery (MCA) was occluded according to the method of Nagasawa and Kogure (Nagasawa and Kogure, 1989; Longa et al.
Approximately 15% to 45% of aneurysms are multiple, and their most common locations are along the anterior communicating artery complex, along the supraclinoid internal carotid artery, at the middle cerebral artery bifurcation, at the basilar artery tip, and at the origin of the posterior inferior cerebellar artery.
44) The term embolic encephalopathy (45) has been used to identify the phenomenon of global aphasia without contralateral hemiparesis, in which the superior and inferior divisions of the dominant hemisphere middle cerebral artery are discretely affected by separate embolic events with sparing of the motor strip.
OMT prevented cerebral ischemic injury in mice induced via a 2 h middle cerebral artery occlusion and a 24h reperfusion, in vivo.
The sound waves penetrate through the skull, pass through brain tissue and are reflected from the middle cerebral artery, the anterior cerebral artery and the posterior cerebral artery.
It can be explained on the basis of CT scan findings which show infarct in the territory of right middle cerebral artery.
All patients had suffered a stroke of the left or right hemisphere middle cerebral artery and many had been left with problems moving or with cognitive processes.
A pulsed-Doppler apparatus (Acuson 128SP5) was used for blood flow velocity measurement of the middle cerebral artery pulsatility index (MCA PI), performed at the same time that blood was drawn.