What is the name of the brain structure that connects the two hemispheres?

• A. Prefrontal cortex
• B. Corpus callosum
• C. Corpus cortex
• D. Refrontal callosum

Answer: (B)

Two hemispheres communicate through a thick bundle of nerve fibers that spans the center of the brain. This structure is the corpus callosum. It connects the left and right cerebral hemispheres, allowing motor, sensory, and cognitive information to be shared between them so that the two sides can work together smoothly. When this bridge is damaged, information transfer between hemispheres can be disrupted, leading to cross-hemisphere coordination issues.

Other options don’t fit because the prefrontal cortex is a region involved in planning and decision making, not the connection between hemispheres; the term corpus cortex isn’t a recognized brain structure; and refrontal callosum is not a valid anatomical name.