The white matter of the spinal cord surrounds the gray matter and consists of bundles of axons that course up and down the cord and provides avenues of communication between different levels of the CNS. These bundles are arranged in three pairs called columns or funiculi8 (few-NIC-you-lie)—a dorsal (posterior), lateral, and ventral (anterior) column on each side. Each column consists of subdivisions called tracts or fasciculi9 (fah-SIC-you-lye).
8funicul = little rope, cord afascicul = little bundle
Saladin: Anatomy & I 13. The Spinal Cord, Spinal I Text I © The McGraw-Hill
Physiology: The Unity of Nerves, and Somatic Companies, 2003
Form and Function, Third Reflexes Edition
486 Part Three Integration and Control
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