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. Author manuscript; available in PMC: 2016 Jun 24.
Published in final edited form as: Compr Physiol. 2015 Jan;5(1):439–473. doi: 10.1002/cphy.c140014

Figure 1.

Figure 1

A schematic diagram showing the parasympathetic and sympathetic innervation of the eye. Neurotransmitters and neuropeptides that are generally present in postganglionic neurons are identified. *Only seen in avian studies to date. Abbreviations: ACh – Acetylcholine; ATP – Adenosine triphosphate; CG – Ciliary ganglion; EWpg – Edinger-Westphal nucleus, preganglionic; IML – Intermediolateral nucleus (cell column); NA – Noradrenaline; nNOS – neuronal nitric oxide synthase; NPY – Neuropeptide Y; PPG – Pterygopalatine ganglion; SCG – Superior cervical ganglion; SSN – Superior salivatory nucleus; VIP – Vasoactive intestinal peptide.