The angular gyrus is designated by which Brodmann area?

The angular gyrus is designated by which Brodmann area?

• A. BA 39
• B. BA 40
• C. BA 44
• D. BA 17

Answer: (A)

The angular gyrus maps to a specific cytoarchitectural region in the parietal lobe. It sits in the posterior part of the inferior parietal lobule, at the convergence of parietal, temporal, and occipital areas. In the classic Brodmann map, this region is designated as area 39. That labeling distinguishes it from nearby gyri: the supramarginal gyrus is area 40, Broca’s area lies in area 44 of the inferior frontal gyrus, and the primary visual cortex is area 17 in the occipital lobe. So the angular gyrus corresponds to Brodmann area 39.

The angular gyrus maps to a specific cytoarchitectural region in the parietal lobe. It sits in the posterior part of the inferior parietal lobule, at the convergence of parietal, temporal, and occipital areas. In the classic Brodmann map, this region is designated as area 39. That labeling distinguishes it from nearby gyri: the supramarginal gyrus is area 40, Broca’s area lies in area 44 of the inferior frontal gyrus, and the primary visual cortex is area 17 in the occipital lobe. So the angular gyrus corresponds to Brodmann area 39.