The white matter region in the cerebrum is which of the following?

The white matter region in the cerebrum is which of the following?

• A. Gray matter of cerebrum
• B. Gray matter of cerebrum
• C. White matter of cerebellum
• D. White matter of cerebrum

Answer: (D)

White matter in the cerebrum is the inner wiring formed by myelinated axons. It lies beneath the outer gray matter cortex and serves to connect different cortical areas with each other and with other brain regions. That’s why the region described as the white matter of the cerebrum is the correct choice: it represents the cerebrum’s internal, myelinated tracts. The gray matter of the cerebrum is the outer layer composed of neuronal cell bodies, so it is not white matter. The white matter you might think of in the cerebellum refers to a different brain structure, not the cerebrum.

White matter in the cerebrum is the inner wiring formed by myelinated axons. It lies beneath the outer gray matter cortex and serves to connect different cortical areas with each other and with other brain regions. That’s why the region described as the white matter of the cerebrum is the correct choice: it represents the cerebrum’s internal, myelinated tracts. The gray matter of the cerebrum is the outer layer composed of neuronal cell bodies, so it is not white matter. The white matter you might think of in the cerebellum refers to a different brain structure, not the cerebrum.