Which one of the following statements about the nervous system is incorrect?
A. Areas of white matter of the spinal cord are divided into anterior, lateral, and dorsal areas and are called columns.
B. The two primary functions of the spinal cord are to process information and to mediate reflex pathways.
C. The pyramidal decussation is a prominent feature on the anterior surface of the pons.
D. Both A and B
E. All of the above
ANS: C
Rationale: A cross-section of the spinal cord reveals a centrally located area of gray matter shaped similar to the letter H. Surrounding this area of gray matter are areas of white matter, which can be divided into the anterior, lateral, and dorsal columns, or funiculi. The two primary functions of the spinal cord are to convey information between the periphery and the brain and to process information. The medulla is continuous with the spinal cord as it enters the skull. This area of the brain contains the pyramidal decussation, a prominent feature on the anterior medulla, composed of crossing axons traveling from the cerebral cortex into the spinal cord.
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