efferent

antonym: afferent
https://doi.org/10.1351/goldbook.11741
Carrying outward; of nerves, those that conduct impulses outward from the central nervous system.
Compare: afferent
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 864 [Terms] [Paper]