The brain devotes more tissue within the for body areas requiring the most precise movement control, such as the fingers.

Motor Cortex.

Explanation:

The motor cortex is a part of the cerebral cortex. The motor cortex helps in the planning and executing of voluntarily movements in the body. Motor Cortex is located in the frontal lobe of the brain.

There are three parts in motor cortex:

So, the part of the brain that helps in the movement of fingers is the motor cortex.

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