Which nerve suspends the pterygopalatine ganglion

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About Recent Edits Go ad-free. The ciliary ganglion receives its sympathetic root from the plexus around the ophthalmic artery, which in turn is derived from the internal carotid artery plexus. The parasympathetic root for the ciliary ganglion arises, in the midbrain, from the Edinger-Westphal nucleus of the oculomotor III nerve, passes through this nerve to its inferior division then to the nerve to the inferior oblique muscle of the eye that gives the parasympathetic root.

Their parasympathetic component fibers supply two intraocular muscles: the constrictor sphincter pupillae and ciliary muscles. The sensory fibers in the short ciliary nerves carry sensations from the conjunctiva and cornea corneal reflex while the sympathetic fibers supply the ocular blood vessels. It is worthy to note that sympathetic fibers going to the dilator pupillae muscle are found to come directly through the long ciliary branches of the nasocciliary nerve.

The pterygopalatine ganglion lies in the pterygopalatine fossa. Two sensory roots suspend it from the maxillary nerve that is the second division of the trigeminal ganglion. The parasympathetic root arises, in the pons, from the superior salivary nucleus of the facial VII nerve. The latter emerges from the petrous temporal bone through the hiatus and groove for greater superficial petrosal nerve to meet the deep petrosal nerve on foramen lacerum.

The branches of the pterygopalatine ganglion include the orbital branches that pass forwards through the inferior orbital fissure, the pharyngeal branch that passes backwards through the pharyngeal palatinovaginal canal, the greater and lesser palatine nerves that descend through their canals, and the short and long nasopalatine nerves that pass medially through the sphenopalatine foramen.

Eventually, these branches supply the orbital periosteum, the lacrimal gland, the roof of nasopharynx, the hard and soft palates, and the nose. In hay fever, irritation of this ganglion leads to running nose and eyes. The submandibular ganglion lies, in the submandibular region, on the hyoglossus muscle with the deep part and duct of the submandibular salivary gland as well as the hypoglossal nerve situated below it; all deep to mylohyoid muscle.

Sensory roots from the lingual nerve suspend the ganglion. The lingual nerve is a branch of the posterior division of the mandibular nerve that is the third and largest division of the trigeminal ganglion. The sympathetic root for this ganglion comes from the facial artery plexus that is derived from the external carotid artery plexus.

Unnamed branches originating from the submandibular ganglion either go directly to supply the submandibular salivary gland or rejoin the lingual nerve to supply the sublingual salivary gland and to carry taste sensation from the anterior two-thirds of the mucous membrane of the tongue.

The otic ganglion hangs from the medial deep aspect of the main trunk of the mandibular division of the trigeminal nerve, and both structures lie deep to the lateral pterygoid muscle in the infratemporal fossa. The sympathetic root for this ganglion comes from the plexus around the middle meningeal artery that is a branch of the first part of the maxillary artery.

This plexus originates from the external carotid artery plexus. In summary, the fibers carried in the ganglion are:. Template:Trigeminal nerve Template:Autonomic. Template:WikiDoc Sources. Mandibular division of trifacial nerve, seen from the middle line. Category : Nervous system. Cookies help us deliver our services.