Which of the following is NOT true of the white matter of the spinal cord?
A. Some of the white matter tracts decussate to the opposite side, either in the spinal cord or in the brainstem.
B. The white matter surrounds the gray matter in the spinal cord.
C. The white matter is located in columns.
D. The ascending tracts of the white matter contain motor neurons.
E. All of these are true of the white matter of the spinal cord.
Answer: D
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