The frontal lobe is separated from the temporal lobe by the ________.

• A. central sulcus
• B. lateral sulcus
• C. parieto-occipital sulcus
• D. longitudinal fissure

Answer: (B)

Verified step by step guidance

1. Step 1: Begin by identifying the anatomical location of the frontal lobe and the temporal lobe in the brain. The frontal lobe is located at the front of the brain, while the temporal lobe is situated on the sides, near the temples.
2. Step 2: Understand the concept of sulci and fissures. Sulci are grooves or folds on the surface of the brain that separate different lobes or regions, while fissures are deeper grooves. These structures help divide the brain into functional areas.
3. Step 3: Review the specific sulci and fissures mentioned in the problem: the central sulcus, lateral sulcus, parieto-occipital sulcus, and longitudinal fissure. Note their anatomical locations and functions. For example, the central sulcus separates the frontal lobe from the parietal lobe, and the lateral sulcus separates the frontal lobe from the temporal lobe.
4. Step 4: Focus on the lateral sulcus (also known as the Sylvian fissure). It is a prominent groove that runs horizontally and separates the frontal lobe from the temporal lobe. This is the correct anatomical structure for the problem.
5. Step 5: Confirm your understanding by visualizing or referencing a diagram of the brain. Locate the lateral sulcus and observe how it divides the frontal lobe from the temporal lobe, ensuring clarity in the anatomical relationship.