part of part of cerebral cortex frontal cortex Brodmann (1909) area 45 triangular area 45 neuronames:2403 Wikipedia:Brodmann_area_45 UBERON:0006482 Brodmann (1909) area 45 UMLS:C1272511 BIRNLEX:1777 FMA:68642 Brodmann area 45, triangular SCTID:384805001 BA45 area 45 of Brodmann B09-45 Part of the cytoarchitecturally defined frontal region of cerebral cortex. In the human, it occupies the triangular part of the inferior frontal gyrus (human) and, surrounding the anterior horizontal limb of the lateral sulcus (human), a portion of the orbital part of the inferior frontal gyrus (human). Bounded caudally by the anterior ascending limb of the lateral sulcus (human), it borders on the insula in the depth of the lateral sulcus. Cytoarchitectonically it is bounded caudally by the opercular area 44, rostrodorsally by the area 46 of Brodmann (human) and ventrally by the area 47 of Brodmann (human) (Brodmann-1909) (Adapted from Brain Info). B09-45 BA45 area triangularis area 45 of Brodmann-1909 Brodmann area 45 (BA45), is part of the frontal cortex in the human brain. Situated on the lateral surface, inferior to BA9 and adjacent to BA46. This area is also known as pars triangular (of the inferior frontal gyrus). In the human, it occupies the triangular part of inferior frontal gyrus (H) and, surrounding the anterior horizontal limb of lateral sulcus (H), a portion of the orbital part of inferior frontal gyrus (H). Bounded caudally by the anterior ascending limb of lateral sulcus (H), it borders on the insula in the depth of the lateral sulcus. In terms of cytoarchitecture, it is bounded caudally by the opercular area 44 (BA44), rostrodorsally by the middle frontal area 46 (BA46), and ventrally by the orbital area 47 (BA47) (Brodmann-1909)[Wikipedia:Brodmann_area_45]. Brodmann area 45 Brodmann area