Final answer:
The lateral sulcus separates the temporal lobe from the frontal and parietal lobes of the brain, serving as a significant landmark for delineating the brain's different functional areas.
Step-by-step explanation:
The lateral sulcus is a significant surface landmark of the cerebral cortex that plays a crucial role in the brain's structure. It marks the boundary between the temporal lobe and the neighboring frontal and parietal lobes. Above the lateral sulcus, the parietal lobe and the frontal lobe can be found, and these are separated by another important sulcus called the central sulcus. The gyri and sulci, such as the lateral sulcus, are vital landmarks that help in identifying the different functional areas of the brain.