How many letters does the top answer for “of nerves and nerve impulses; conveying information away from the cns” have?

The most common answer is efferent (8 letters).

Crossword clue: of nerves and nerve impulses; conveying information away from the cns

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

efferent 8 letters wn-def

a nerve that conveys impulses toward or to muscles or glands

motorial 8 letters wn-def

of nerves and nerve impulses; conveying information away from the CNS