descending tract
Anatomical term for a bundle of nerve fibers that carries signals downward, e.g., from the brain to the spinal cord.
Damage to the descending tracts can affect motor function.
Compound of 下 (か, 'down') + 行 (こう, 'go') + 路 (ろ, 'path'). The term is a direct translation of the Western anatomical concept 'descending tract'.