Definition of Middle cerebral artery
1. Noun. One of two branches of the internal carotid artery; divides into three branches.
Medical Definition of Middle cerebral artery
1.
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: arteria cerebri media.
(05 Mar 2000)
Lexicographical Neighbors of Middle Cerebral Artery
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