Broca's area corresponds to which Brodmann areas, located in which part of the dominant hemisphere cortex?

• A Areas 44 and 45, pars opercularis and pars triangularis of the inferior frontal gyrus ✓
• B Area 22, posterior part of the superior temporal gyrus
• C Areas 41 and 42, superior temporal gyrus
• D Area 6, premotor cortex on the lateral convexity

Explanation

Broca's area comprises Brodmann areas 44 and 45 in the opercular and triangular parts of the inferior frontal gyrus of the dominant hemisphere, and its damage produces non-fluent expressive aphasia with preserved comprehension. Area 22 defines Wernicke's area, whose lesion gives fluent receptive aphasia. Areas 41 and 42 form the primary auditory cortex in Heschl's gyrus, and area 6 is the premotor cortex, none of which produce the classic motor speech deficit.

Reference: Gray's Anatomy, 42nd ed.

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Written and medically reviewed by the StethoPrep medical team.