mo·to·ri·al /moˈtorɪəl/ 形容詞
  Mo·tor Mo·to·ry Mo·to·ri·al a.  Causing or setting up motion; pertaining to organs of motion; -- applied especially in physiology to those nerves or nerve fibers which only convey impressions from a nerve center to muscles, thereby causing motion.
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  motorial
       adj : of nerves and nerve impulses; conveying information away
             from the CNS; "efferent nerves and impulses" [syn: efferent]
             [ant: afferent]