What term describes the right and left halves of the cerebrum?

• A. Cerebral hemispheres
• B. Hemispheric lobes
• C. Cerebellar hemispheres
• D. Brain lobes

Answer: (A)

The right and left halves of the cerebrum are called the cerebral hemispheres. The cerebrum is split down the middle by a deep groove called the longitudinal fissure, creating two halves that handle much of our thinking, sensing, and voluntary movement. The other terms mix up different parts or general regions: cerebellar hemispheres refer to the two halves of the cerebellum (a different part of the brain), brain lobes are broad regions within each hemisphere rather than the halves themselves, and “hemispheric lobes” isn’t a standard anatomical term. So, cerebral hemispheres is the precise name for the two halves of the cerebrum.