Lobes Of The Brain

Lobes Of The Brain

Question 1. Discuss the demarcation of lobes of the cerebral hemisphere on its superolateral surface.
Answer: The superolateral surface of the cerebral hemisphere is demarcated into four lobes as follows:

Lobes of the brain

• Frontal lobe: It lies anterior to the central sulcus and above the lateral sulcus. It is so named because it is related to the frontal bone of the skull.
• Parietal lobe: It lies posterior to the central sulcus, above the lateral sulcus, and in front of an imaginary vertical line connecting the parieto-occipital sulcus with the occipital notch. It is so named because it is related to the parietal bone of the skull.
• Temporal lobe: It lies below the lateral sulcus and in front of an imaginary vertical line extending from the parieto-occipital sulcus to the occipital notch. It is so-called because it is related to the temporal bone of the skull.
• Occipital lobe: It lies behind the imaginary vertical line connecting the parietal occipital sulcus with the occipital notch. It is so named because it is related to the occipital bone of the skull.

Cerebral hemisphere lobes