Question:medium
A 65-year-old lady presents with a vascular injury to the inferior frontal gyrus. Which functional area would mostly be affected
A 65-year-old lady presents with a vascular injury to the inferior frontal gyrus. Which functional area would mostly be affected
Updated On: Jun 23, 2026
- Visual
- Auditoryss
- Wernicke
- Motor speech
Show Solution
The Correct Option is D
Solution and Explanation
Area-matching angle. Take each functional cortex and locate it, then see which one sits in the inferior frontal gyrus. The primary visual area is occipital, around the calcarine sulcus. The primary auditory area is in the superior temporal gyrus on the transverse temporal (Heschl) gyri. The Wernicke (comprehension) area is at the posterior end of the superior temporal gyrus. None of those is frontal. The motor speech area, Broca area (Brodmann 44 and 45), is the one that occupies the pars opercularis and triangularis of the inferior frontal gyrus in the dominant hemisphere. So a stroke there hits motor speech and produces non-fluent expressive aphasia with effortful, telegraphic output but largely intact understanding. The answer is the motor speech area. Reference: BDC, 7e, Vol 4, p 129.
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