The corpus callosum
A) does not begin to develop until the preschool years.
B) processes auditory information only.
C) connects the brainstem to the oldest and most primitive regions of the brain.
D) has generally completed its myelination by 8 years of age.

Question

Quizplus · Accepted Answer

The corpus callosum is a broad band of nerve fibers joining the two hemispheres of the brain. It is crucial for communication between the brain's left and right sides and starts developing in utero, not in the preschool years. It does not process auditory information only; that is more the function of specific parts of the temporal lobes. It does not connect the brainstem to the oldest and most primitive regions of the brain; instead, it connects the two hemispheres of the cerebrum. Myelination of the corpus callosum begins before birth and continues into early adulthood, but a significant portion of its myelination is generally completed by the age of 8, facilitating improved efficiency in neural communication across the hemispheres.

The Corpus Callosum