MCA cortex areas are allotted 7 points. Which regions are included?

MCA cortex areas are allotted 7 points. Which regions are included?

• A. Insular, M1, M2, M3, M4, M5, M6
• B. Frontal pole, temporal lobe, parietal lobe
• C. Insular, M1, M2, M3, M4, M5, M7
• D. Insular, M1, M2, M3, M4, M5

Answer: (A)

The middle cerebral artery territory on the lateral surface of the brain includes the insular cortex and a series of motor-related cortical areas labeled M1 through M6, totaling seven distinct regions. This specific set—insular plus M1, M2, M3, M4, M5, and M6—fits the defined MCA cortical map used in this context. M7 is not part of this seven-region motor map, so including it would be incorrect. Likewise, naming whole lobes (frontal pole, temporal, parietal) isn’t the precise way these MCA-based regions are described, since the question targets the numbered motor areas within the MCA supply territory. Therefore, listing the insula with M1–M6 captures the exact seven regions associated with the MCA distribution.

The middle cerebral artery territory on the lateral surface of the brain includes the insular cortex and a series of motor-related cortical areas labeled M1 through M6, totaling seven distinct regions. This specific set—insular plus M1, M2, M3, M4, M5, and M6—fits the defined MCA cortical map used in this context. M7 is not part of this seven-region motor map, so including it would be incorrect. Likewise, naming whole lobes (frontal pole, temporal, parietal) isn’t the precise way these MCA-based regions are described, since the question targets the numbered motor areas within the MCA supply territory. Therefore, listing the insula with M1–M6 captures the exact seven regions associated with the MCA distribution.