The corpus callosum is a band of nerve fibers that connects the two hemispheres of the cerebral cortex and facilitates communication between them. It does not hold the hemispheres together via fibrous muscle, nor does it cause a vegetative state when severed accidentally. It also does not demarcate the boundary between the brainstem and the reticular activating system.

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The Corpus Callosum

Question 45

Multiple Choice

The corpus callosum

A) facilitates communication between the two halves of the cerebral cortex.
B) is made of fibrous muscle that holds the hemispheres together.
C) causes a vegetative state when severed accidentally.
D) is the boundary between the brainstem and the reticular activating system.

Correct Answer: