What nerve Innervates the otic ganglion?
Glossopharyngeal Nerve (Cranial Nerve IX) These axons follow the tympanic and lesser petrosal nerves and innervate the otic ganglion, located just medial to the mandibular branch of the trigeminal nerve.
What is the function of the otic ganglion?
The otic ganglion transmits postganglionic parasympathetic secretomotor fibers to all branches of the mandibular division of the trigeminal nerve. It also sends sympathetic vasomotor fibers to the parotid gland.
What branch of the trigeminal nerve runs through the otic ganglion?
Medial pterygoid nerve – After passing through the otic ganglion without synapsing, this nerve supplies the medial pterygoid, tensor veli palatini, and tensor tympani muscles.
What nerve innervates the submandibular ganglion?
the facial nerve
The submandibular ganglion is one of four parasympathetic ganglia of the head and neck. It receives parasympathetic fibers from the facial nerve.
What is otic nerve?
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.
What is mandibular nerve?
The mandibular nerve is the only branch of the trigeminal nerve that contains a motor root. In the infratemporal fossa, near the skull base, the main trunk immediately gives off the sensory meningeal branch and motor muscular branches to the medial pterygoid, tensor tympani, and tensor veli palatini muscles.
Do nerves synapse in submandibular ganglion?
Fibers. Like other parasympathetic ganglia of the head and neck, the submandibular ganglion is the site of synapse for parasympathetic fibers and carries other types of nerve fiber that do not synapse in the ganglion. These do not synapse in this ganglion.
What does mandibular nerve innervate?
In general, the mandibular nerve supplies the lower face for sensation over the mandible, including the attached teeth, the TMJ and the mucous membrane of the mouth as well as the anterior two-thirds of the tongue (the posterior one third is supplied by the glossopharyngeal nerve).
Is mandibular nerve mixed?
The mandibular division of the trigeminal nerve, also referred to as the mandibular nerve, is a mixed sensory and branchial motor nerve. It is also the largest of the three branches of the trigeminal nerve.
What does the otic ganglion innervate?
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.
Is the otic ganglion a microganglia?
The otic ganglion is very small and may exist only as a group of microganglia, medial to the mandibular nerve, just distal to its exit from the skull (Kuntz, 1945; Mitchell, 1953a ). The preganglionic pathway is usually said to arise from the glossopharyngeal nerve (9n) via the tympanic plexus and the lesser petrosal nerve.
What is the function of the mandibular ganglion?
It’s joined to the mandibular division of trigeminal nerve and gives a relay station to the secretomotor fibres to the parotid gland and is a small parasympathetic ganglion. It’s closely associated with the mandibular nerve but functionally it’s related to glossopharyngeal nerve, topographically. Size: Pinhead (2-3 millimeters in size).
What is the submandibular ganglion?
Submandibular ganglion – lateral view. The two main branches of the mandibular nerve synapse on the otic ganglion. The mandibular nerve continues on and synapses on the Gasserian ganglion (ganglion of the trigeminal nerve). The terminal synapses are in the pontine nucleus and the spinal nucleus and tract.