Final answer:
The corpus callosum is the large bundle of axons that connects the left and right hemispheres of the brain, essential for interhemispheric communication.
Step-by-step explanation:
The corpus callosum is the large bundle of axons that connects the left and right hemispheres of the brain, facilitating communication between the two sides. It consists of about 200 million axons and is the main avenue of communication, allowing information processed on one side of the brain to be shared with the other.
The corpus callosum lies deep within the brain and is pivotal in integrating motor, sensory, and cognitive performances between the cerebral cortex on one side of the brain to the same region on the other side.