parasympathetic innervation: Pterygopalatine, Submandibular, Otic Ganglion, clinical Flashcards
what is the pterygopalatine ganglion also known as?
sphenopalatine
significance of pterygopalatine ganglion?
largest of the four parasympathetic ganglia
where is the pterygopalatine ganglion located?
located within the pterygopalatine fossa
what is the pterygopalatine fossa?
a space located inferiorly to the base of the skull, and posteriorly to the maxilla
Pre-ganglionic fibres of the pterygopalatine ganglion?
The pterygopalatine ganglion is supplied by fibres from the superior salivatory nucleus
what is superior salivatory nucleus associated with?
pre-ganglion of pterygopalatine
associated with the facial nerve
where do fibres fro the superior salivatory nucleus travel within? to reach?
(pre-ganglion of pterygopalatine)
the greater petrosal nerve and the nerve of the pterygoid canal to reach the ganglion
where do post-ganglionic fibres of the pterygopalatine ganglion leave the ganglion?
by hitch-hiking on branches of the maxillary nerve (derived from the trigeminal nerve)
post-ganglionic fibres from pterygopalatine ganglion provides what?
secretomotor innervation to lacrimal gland, mucous glands of posterosuperior nasal cavity, nasopharynx, and the palate
what passes through the pterygopalatine ganglion without synapsing?
Sympathetic fibres from the internal carotid plexus and sensory branches from the maxillary nerve
where is the submandibular ganglion located?
inferiorly to the lingual nerve, from which it is suspended
what are pre-ganglionic fibres of the submandibular ganglion supplied by?
by fibres from the superior salivatory nucleus (associated with the facial nerve)
what are the fibres from the superior salivatory nucleus carried within? (submandibular ganglion)
within a branch of the facial nerve, the chorda tympani
how does the chorda tympani reach the submandibular ganglion?
This nerve hitch-hikes along the lingual branch of the mandibular nerve to reach the ganglion
where do the post-ganglionic fibres leave the submandibular ganglion to travel to?
Post-ganglionic fibres leave the ganglion and travel directly to the submandibular and sublingual glands
target organs of submandibular ganglion?
Secretomotor innervation to the submandibular and sublingual salivary glands
what else passes through the submandibular ganglion aside from pre,post ganglion?
Sympathetic fibres from the facial artery plexus pass through the submandibular ganglion
what do sympathetic fibres from the facial artery plexus innervate? (pass through submandibular ganglion)
innervate glands in the base of the oral cavity
where is the otic ganglion located?
inferiorly to the foramen ovale, within the infratemporal fossa
what is the otic ganglion medial to?
the mandibular branch of the trigeminal nerve
pre-ganglionic fibres of the otic ganglion?
The ganglion is supplied by fibres from inferior salivatory nucleus (associated with the glossopharyngeal nerve)
where do parasympathetic fibres of the otic ganglion travel within? reaching?
within a branch of the glossopharyngeal nerve, the lesser petrosal nerve, to reach the otic ganglion
post-ganglionic parasympathetic fibres of the otic ganglion travels long?
The parasympathetic fibres hitchhike along the auriculotemporal nerve
what do parasympathetic fibres (post) of otic ganglion provide innervation to?
provide secretomotor innervation to the parotid gland
