File:Horner's Syndrome and Autonomic innervation of the eye.svg

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Summary

Description
English: Scheme showing sympathetic and parasympathetic innervation of the pupil and sites of lesion in a Horner's syndrome.
  1. sympathetic fibers arise from the hypothalamus
  2. stellate ganglion
  3. synapse at the superior cervical ganglion
  4. sympathetic plexus around internal carotid artery
  5. oculomotor nerve (Cranial nerve 3) fibers synapse at the ciliary ganglion (blue)
  6. Short ciliary nerves from ciliary ganglion carrying parasympathetic supply to sphincter pupillae (green)
  7. Trigeminal fibers (Cranial nerve 5) relay in ciliary ganglion and carry sympathetic supply (yellow)
  8. Long ciliary nerve fibers (from the ophthalmic branch of CN 5) are the afferent limb of the blink reflex carrying sensory information from the cornea.
  9. Sphincter pupillae (circular fibers) and Dilator pupillae (radial fibers) muscles of the pupil.
Near the stellate ganglion, the sympathetic fibers go around the subclavian artery (shown along with the carotid vessels). This is a site of lesion especially due to its proximity to the apex of the lung (eg. Pancoast's tumor). The superior division of oculomotor nerve is shown supplying the Superior rectus and levator palpebrae superioris.
Date
Source Own work
Author Suraj Rajan

THIS SCHEMATIC IS INCORRECT. THE FIRST ORDER NEURON SYNAPSES IN THE CILIOSPINAL CENTER OF BUDGE PRIOR TO THE PATHWAY PASSING THROUGH THE STELLATE GANGLION.

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inception

12 March 2012

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current03:17, 12 March 2012Thumbnail for version as of 03:17, 12 March 20122,546 × 1,541 (427 KB)wikimediacommons>Suraj RajanNumbered

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