abducens nerve(redirected from VI nerve)
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abducens nerve the sixth cranial nerve; it arises from the pons and supplies the lateral rectus muscle of the eyeball, allowing for motion. Paralysis of the nerve causes diplopia (double vision). See anatomic Table of Nerves in the Appendices.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
ab·du·cent nerve [CN VI][TA]
a small motor nerve supplying the lateral rectus muscle of the eye; its origin is in the facial colliculus of the tegmentum of the pons just below the surface of the rhomboid fossa. It emerges from the brain in the fissure between the medulla oblongata and the posterior border of the pons (medullopontine sulcus); it enters the dura of the clivus and passes through the cavernous sinus, entering the orbit through the superior orbital fissure.
Synonym(s): nervus abducens [CN VI] [TA], abducens nerve ☆ , abducent (2) , sixth cranial nerve [CN VI]
Farlex Partner Medical Dictionary © Farlex 2012
abducens nervethe cranial nerve of vertebrates that supplies the external rectus muscle of the eye (see EYE MUSCLE); it is mainly MOTOR in function.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005