The central sulcus separates which lobes?

The central sulcus separates which lobes?

• A. Frontal and Occipital
• B. Frontal and Parietal
• C. Parietal and Temporal
• D. Temporal and Frontal

Answer: (B)

The main idea is that major sulci define the borders between brain lobes. The central sulcus is the groove that marks the boundary between the frontal and parietal lobes. It runs down the lateral surface, separating the precentral gyrus (the primary motor cortex) in front from the postcentral gyrus (the primary somatosensory cortex) behind. This makes it the landmark for the frontal–parietal boundary. Other pairings are separated by different grooves: frontal and occipital by the parieto-occipital sulcus; parietal and temporal by the lateral (Sylvian) fissure; and temporal and frontal also by the lateral fissure.

The main idea is that major sulci define the borders between brain lobes. The central sulcus is the groove that marks the boundary between the frontal and parietal lobes. It runs down the lateral surface, separating the precentral gyrus (the primary motor cortex) in front from the postcentral gyrus (the primary somatosensory cortex) behind. This makes it the landmark for the frontal–parietal boundary. Other pairings are separated by different grooves: frontal and occipital by the parieto-occipital sulcus; parietal and temporal by the lateral (Sylvian) fissure; and temporal and frontal also by the lateral fissure.