What is the main part of the brain called?

The the largest part of the brain is called the cerebrum. Gray's Anatomy (1918) describes it as the largest part of the brain.

What it is

  • The largest part of the brain.
  • Divided into left and right hemispheres by a deep central fissure.
  • Its wrinkled surface (cerebral cortex) is where thinking, planning, memory, and voluntary movement are organized.

Where it is

  • Fills the upper part of the skull.
  • Sits above the cerebellum and brainstem.
  • Its two hemispheres are connected by the corpus callosum.

Source:

Last verified: 2026-07-18

  • Best Anatomy Answers is an educational reference about human anatomy. It is not medical advice — for any health concern, talk to a licensed medical professional.

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