Spinal Cord Tract

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** White matter in the spinal cord comprising longitudinally oriented nerve fibers (axons) that transmit impulses in both directions: ascending tracts transmit sensory information to the brain from the body, and descending tracts transmit impulses from the brain to the muscles.

**Synonyms:** - Ascending and Descending Tracts of Spinal Cord - Spinal Cord Tracts - Tracts of Spinal Cord