Brodmann (1909) area 12

Term ID

UBERON:0013543

Synonyms

• area 12 of Brodmann-1909
• area praefrontalis
• B09-12
• Brodmann (1909) area 12
• Brodmann area 12, prefrontal
• sulcus fronto-orbitalis

Definition

Brodmann area 12 is a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. It occupies the most rostral portion of the frontal lobe. Brodmann-1909 did not regard it as homologous, either topographically or cytoarchitecturally, to rostral area 12 of the human. Distinctive features (Brodmann-1905): a quite distinct internal granular layer (IV) separates slender pyramidal cells of the external pyramidal layer (III) and the internal pyramidal layer (V); the multiform layer (VI) is expanded, contains widely dispersed spindle cells and merges gradually with the underlying cortical white matter; all cells, including the pyramidal cells of the external and internal pyramidal layers are inordinately small; the internal pyramidal layer (V) also contains spindle cells in groups of two to five located close to its border with the internal granular layer (IV). http://en.wikipedia.org/wiki/Brodmann_area_12

References

• Brodmann_area:12
• UMLS:C1272534
• birnlex:1743
• http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=77
• http://linkedlifedata.com/resource/umls/id/C1272534

Ontology

Uberon Ontology