Medial Frontal Gyrus Of The Brain, Anatomy

Description

Medial frontal gyrus anatomy occupies the medial surface of the frontal lobe, arching superior to the cingulate gyrus and running anteroposteriorly toward the paracentral lobule. A medial (sagittal) orientation logically exposes its relationship to the cingulate sulcus inferiorly, with the superior frontal region continuing toward the frontal pole anteriorly and blending posteriorly with medial portions of primary motor and premotor cortex near the central sulcus. Inferomedially, the cingulate gyrus hugs the corpus callosum, making the medial frontal gyrus appear as the broad cortical strip between cingulate cortex below and the superior margin of the hemisphere above. Sulcal borders matter here. Clinically, this is the cortical territory that sits in the anterior cerebral artery distribution, so infarcts often present with contralateral leg-predominant weakness or apraxia when medial premotor and supplementary motor areas are involved, and with abulia when medial prefrontal networks are disrupted. The fixed medial surface view is also the one surgeons and trainees rely on when orienting to the cingulate sulcus and pericallosal region for interhemispheric approaches, where errors in gyral identification can place supplementary motor cortex or anterior cingulate at risk. Clean separation of the medial frontal gyrus from the cingulate gyrus supports teaching of limbic versus frontoparietal motor planning regions without relying on arbitrary lobar boundaries. Neuroanatomy instructors can drop this illustration into a gross anatomy lab, a behavioral neuroscience lecture on medial prefrontal circuitry, or a neuroradiology primer that links medial gyral anatomy to ACA stroke patterns on CT and MRI. Medical publishers will also find it fits well in chapters covering medial hemispheric landmarks, cingulotomy targets, and supplementary motor area syndromes. Anatomical accuracy verified by SciePro's Medical Advisory Board.