Callosomarginal Artery

Sunday, September 27, 2015

The callosomarginal artery is a blood vessel in the brain that emerges from the anterior cerebral artery along with the pericallosal branch, making a fork with the latter. From its point of origin, it climbs up, but then it turns backwards to run back along the cingulate sulcus, parallel and above the pericallosal artery and the genu ("knee") and the roof border of the corpus callosum on the inner side of the brain hemisphere (right or left). Along its course, the callosomarginal artery gives off four main branches: the anterior, the middle and the posterior medial frontal branches, as well as the paracentral artery. Function: it supplies secondary and primary motor area of the frontal lobe, and sensory regions of parietal lobe on the inner side of the cerebral hemisphere.