Question

the cerebral hemispheres of the brain are separated by______.
central fissure
longitudinal fissure
parieto - occipital fissure
lateral fissure

Explanation:

To solve this, we recall brain anatomy: the cerebral hemispheres (left and right) are separated by the longitudinal fissure. The central fissure (fissure of Rolando) separates frontal and parietal lobes. The parieto - occipital fissure separates parietal and occipital lobes. The lateral fissure (Sylvian fissure) separates frontal/temporal from parietal lobes. So the correct option is the one with longitudinal fissure.

Answer:

B. longitudinal fissure (assuming the options are labeled as A: central fissure, B: longitudinal fissure, C: parieto - occipital fissure, D: lateral fissure)