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The ciliary ganglion is a parasympathetic ganglion located just behind the eye in the posterior orbit. It is 1–2 mm in diameter and in humans contains approximately 2,500 neurons . [ 1 ] The ganglion contains postganglionic parasympathetic neurons.
Middletown is a city in Butler and Warren counties in the U.S. state of Ohio. The population was 50,987 at the 2020 census . It is part of the Cincinnati metropolitan area in southwest Ohio, 29 miles (47 km) northeast of Cincinnati and 20 miles (32 km) southwest of Dayton .
Johnstown is a city in Licking County, Ohio, United States. The population was 5,182 at the 2020 census and was estimated to be 5,310 in 2023. The city is most notable for the finding of a nearly complete mastodon skeleton under the city.
The ciliary muscle receives parasympathetic fibers from the short ciliary nerves that arise from the ciliary ganglion. The parasympathetic postganglionic fibers are part of cranial nerve V 1 (Nasociliary nerve of the trigeminal), while presynaptic parasympathetic fibers to the ciliary ganglia travel with the oculomotor nerve. [9] The ...
Trigeminal fibers (Cranial nerve 5) relay in ciliary ganglion and carry sympathetic supply (yellow) 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. Sphincter pupillae (circular fibers) and Dilator pupillae (radial fibers) muscles of the pupil.
The internal carotid plexus communicates with the trigeminal ganglion, the abducent nerve, and the pterygopalatine ganglion (also named sphenopalatine); it distributes filaments to the wall of the internal carotid artery, and also communicates with the tympanic branch of the glossopharyngeal nerve. [citation needed]
The parasympathetic innervation of the ciliary body is the most clearly understood. Presynaptic parasympathetic signals that originate in the Edinger-Westphal nucleus are carried by cranial nerve III (the oculomotor nerve) and travel through the ciliary ganglion. Postsynaptic fibers from the ciliary ganglion form the short ciliary nerves.
The ciliary ganglion is a parasympathetic ganglion located just behind the eye in the posterior orbit. Three types of axons enter the ciliary ganglion but only the preganglionic parasympathetic axons synapse there. The entering axons are arranged into three roots of the ciliary ganglion, which join enter the posterior surface of the ganglion.