The corpus callosum facilitates communication between the _______ .
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A
left and right brain
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B
skeletal and neural systems
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C
brain and spinal cord
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D
thalamus and hypothalamus
The corpus callosum facilitates communication between the left and right brain.
It is a large bundle of nerve fibers that connects the left and right hemispheres of the brain, allowing for the transfer of information between them. This communication is essential for coordinating functions that involve both sides of the brain.
A. Left and right brain
This is the correct answer. The corpus callosum is a key structure that enables the left and right hemispheres of the brain to communicate with each other, helping to integrate functions such as movement, sensation, and cognition.
B. Skeletal and neural systems
This is incorrect. The skeletal and neural systems work together through the peripheral nervous system, but the corpus callosum is not involved in their communication. The corpus callosum is specifically a part of the brain's communication network.
C. Brain and spinal cord
This is incorrect. The brain and spinal cord communicate through the spinal cord itself, with information traveling via the spinal nerves. The corpus callosum, however, is involved in communication between the two hemispheres of the brain, not between the brain and spinal cord.
D. Thalamus and hypothalamus
This is incorrect. While both the thalamus and hypothalamus are crucial for brain function, the corpus callosum does not directly facilitate communication between them. These two structures are connected through other pathways in the brain, primarily involved in sensory processing and homeostasis.
Conclusion:
The corpus callosum is responsible for facilitating communication between the left and right hemispheres of the brain, which is critical for coordinating complex cognitive and motor functions. The other options do not accurately describe the role of the corpus callosum.

Topic Flashcards
Click to FlipWhat type of nerve fibers (by function) make up the corpus callosum?
Commissural fibers (axons that connect corresponding areas of the two cerebral hemispheres).
What is the name of the rare neurological condition resulting from the surgical severing of the corpus callosum to treat epilepsy?
Split-brain syndrome.
Besides the corpus callosum, name the other two main commissures that connect the brain's hemispheres.
The anterior commissure and the posterior commissure.
During brain development, what happens to the size and myelination of the corpus callosum from infancy to adulthood?
It grows significantly in size and becomes more heavily myelinated, increasing the speed and efficiency of interhemispheric communication.
Which imaging technique is commonly used to visualize the corpus callosum and other white matter tracts in the living brain?
Diffusion Tensor Imaging (DTI), a specialized type of MRI.