Middle cerebral artery - Definition


The middle cerebral artery (MCA) is a branch of the internal carotid artery. There is then one on each side of the brain. They are found in the lateral fissure of Sylvius, a trough which separates the lobes of the brain. MCAs enable blood to reach the deeper, and more superficial, areas of the brain, in particular a large part of the surface of the hemispheres. In the case of the obstruction of the MCA, it is a sylvian infarction which is the consequence of brain failure, responsible for the symptoms of stroke: the main signs of stroke in this area are major or minor hemiplegia, aphasia, apraxia, or specific vision problems.


Original article published by Jeff. Translated by Jeff. Latest update on August 19, 2014 at 12:29 PM by christelle.b.
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