Final answer:
The motor cortex is found in the frontal lobe and initiates voluntary movements.
Step-by-step explanation:
The motor cortex is responsible for initiating voluntary movements and is found in the frontal lobe of the brain.
The primary motor cortex, also known as the precentral gyrus, is located in the frontal lobe. It receives input from other areas of the brain involved in planning movement and stimulates spinal cord neurons to contract skeletal muscles.
For example, when you decide to lift your arm, the motor cortex sends signals to the muscles in your arm, causing it to move.