University of Central Florida (UCF) ZOO 3733C Anatomy Lab Practical 1 Practice Test

Interhemispheric communication is carried by commissural fibers, and the largest of these is the corpus callosum. This broad, C-shaped bundle sits beneath the cerebral cortex and links homologous areas across the two hemispheres, enabling coordinated activity and integration of sensory, motor, and cognitive information.

The anterior commissure is a much smaller bundle that primarily connects portions of the temporal lobes and olfactory regions, not the entire cortex. The posterior commissure is a small tract near the top of the midbrain involved in certain reflex pathways, not a major conduit for cortical cross-talk. The fornix is a limbic system tract connecting the hippocampus to the mammillary bodies and other limbic structures, not linking the hemispheres.