The second largest part of the brain is the cerebellum. It is located under the cerebrum at the back of the skull and is responsible for coordinating voluntary movements, maintaining balance and posture, and fine-tuning motor activities.
The cerebellum comprises two hemispheres and has a highly folded surface, which increases its surface area for processing information. Although it only accounts for about 10% of the brain’s total volume, it contains over 50% of the brain’s neurons, highlighting its importance in motor control.
In summary, the cerebellum is crucial for executing smooth and balanced movements, making it the second largest part of the brain after the cerebrum.