Question

Broca's area is situated in:

• A. Inferior frontal gyrus
• B. Superior temporal gyrus
• C. Angular gyrus
• D. None of the above

Hint:

Motor speech area named after Broca lies in the dominant frontal lobe.

Answer 1

The Correct Option is A

Step 1: Broca's area is the motor speech area. It lies in the frontal lobe of the dominant cerebral hemisphere, which is the left hemisphere in most people. Step 2: Anatomically it is located in the inferior frontal gyrus, and is defined by Brodmann area 44 (pars opercularis) and area 45 (pars triangularis). This makes option (a) correct. Step 3: Damage to this region produces Broca's aphasia, also called expressive or non-fluent aphasia, where comprehension is preserved but speech output is impaired. Step 4: The distractors are sensory or language-integration areas: the superior temporal gyrus houses Wernicke's area (receptive speech), and the angular gyrus is concerned with reading and writing, not motor speech production. Hence the inferior frontal gyrus is the answer.