Question

cerebral white matter
what is the name of the white matter structure that connects the left and right hemispheres of the cerebrum?
sulcus
internal capsule
longitudinal fissure
corpus callosum

Explanation:

• Sulcus: A sulcus is a groove on the surface of the brain, not a connecting structure.
• Internal capsule: It is a white matter structure that contains nerve fibers connecting the cortex with subcortical structures (like the thalamus, basal ganglia), not connecting the two hemispheres.
• Longitudinal fissure: This is a deep groove that separates the left and right cerebral hemispheres, not a connecting structure.
• Corpus callosum: It is a large bundle of white matter fibers that connects the left and right hemispheres of the cerebrum, allowing for communication between the two hemispheres.

Answer:

Corpus callosum