| efferent nerve | <anatomy, nerve> A nerve which transmits impulses from the brain and spinal cord to a muscle or organ. (27 Sep 1997) |
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| efferent pathways | Nerve structures through which impulses are conducted from a nerve centre toward a peripheral site. (12 Dec 1998) |
| efferent vessel | A vessel carrying blood away from the heart. An artery or arteriole. (12 Dec 1998) |