Search results
Results From The WOW.Com Content Network
The sympathetic root of ciliary ganglion is one of three roots of the ciliary ganglion. It contains postganglionic sympathetic fibers whose cell bodies are located in the superior cervical ganglion. Their axons ascend with the internal carotid artery as a plexus of nerves, the internal carotid plexus.
The sympathetic root contains the postganglionic sympathetic axons that provide sympathetic supply to the blood vessels of the eye. Sometimes, they also supply the pupillary dilator muscle , however these axons usually travel from the nasociliary nerve to the long ciliary nerves to enter the eye.
The sympathetic fibers are provided by the superior cervical ganglion and reach the ganglion either as branches of the nasociliary nerve or directly from the extension of the plexus on the ophthalmic artery (sympathetic branch to ciliary ganglion). The sympathetics are non-specific and provide vasoconstriction of the globe.
The long ciliary nerves contain post-ganglionic sympathetic fibers from the superior cervical ganglion for the dilator pupillae muscle. [1] The sympathetic fibers to the dilator pupillae muscle mainly travel in the nasociliary nerve but there are also sympathetic fibers in the short ciliary nerves that pass through the ciliary ganglion without forming synapses.
The dilator muscle is innervated more specifically by postganglionic sympathetic nerves arising from the superior cervical ganglion as the sympathetic root of ciliary ganglion. From there, they travel via the internal carotid artery through the carotid canal to foramen lacerum .
The otic ganglion is a small parasympathetic ganglion located immediately below the foramen ovale in the infratemporal fossa and on the medial surface of the mandibular nerve. It is functionally associated with the glossopharyngeal nerve and innervates the parotid gland for salivation. It is one of four parasympathetic ganglia of the head and neck.
Sympathetic connections of the ciliary and superior cervical ganglia. (Ciliospinal center not labeled, but region is situated in spinal cord segment T1-T2, which is labeled; red dots situated within ciliospinal center.) Pathway in blue actually represents parasympathetic pathway.
Its parasympathetic root is derived from the nervus intermedius (a part of the facial nerve) through the greater petrosal nerve.. In the pterygopalatine ganglion, the preganglionic parasympathetic fibers from the greater petrosal branch of the facial nerve synapse with neurons whose postganglionic axons, vasodilator, and secretory fibers are distributed with the deep branches of the trigeminal ...