Pterygopalatine Fossa Flashcards
what are the 3 bones that surround the pterygopalatine fossa?
maxilla
sphenoid
palatine
how many openings are in the fossa?
7
what do the nerves and arteries supply for the pterygopalatine fossa?
middle face
what is the important ganglion that is associated with the fossa
pterygopalatine ganglion
what synapses at the pterygopalaine ganglion
parasympathetic fibers
what travels through the pterygopalatine ganglion
sympathetic fibers
what fossa is located medial to the infratemporal fossa
pterygopalatine fossa
what opening is lateral in p. fossa
pterygomaxillary fissure
what opening is medial in p fossa
sphenopalatine foramen
what is posteriosuperior in p fossa
foramen rotundum
what is anterosuperior in p foss
inferior orbital fissure
what 2 are posterior in p fossa
pterygoid canal
pharyngeal canal
what is inferior in p fossa
palatine canal
what artery is supplying middle face
maxillary artery
what do the terminal branches of maxillary artery travel through
pterygomaxillary fissure
what 6 arteries are in the pterygopalatine fossa
artery of pterygoid canal pharyngeal artery sphenopalatine infra-orbital posterior superior alveolar descending palatine
what are all these 7 arteries branches from?
maxillary artery
what are the 3 parts of the maxillary artery
mandibular
pterygoid
pterygopalatine
where does the pterygoid venus plexus end up?
infratemporal fossa
what is the sphenopalatine foramen created by?
sphenoid and palatine bones
what artery runs through sphenopalatine foramen?
sphenopalatine a.
what cavity does the sphenopalatine artery go to?
nasal cavity
what are the 2 branches of the sphenopalatine artery
posterior lateral nasal
posterior septal
what are the 2 branches of posterior lateral nasal NERVE
posterior superior lateral nasal nerve
posterior inferior lateral nasal nerve
what nerve is the posterior superior lateral nasal n branch off of?
maxillary nerve (v2)
what nerve is the posterior inferior lateral nasal branch n off of?
greater palatine nerve (v2)
what does the nerves of the pterygoid palatine ganglion supply?
palatal mucosa, nasal mucosa, lateral wall and septal
what does the autonomic innervation of the pterygoid palatine ganglion do?
keep mucosa wet
what is another nerve branching off of the pterygoid palatine ganglion
nasopalatine nerve
what nerve is nasopalatine n branching from?
V2
what canal does the nasopalatine n go through?
incisive canal
what cranial fossa is the foramen rotundum is?
middle cranial fossa
what nerve goes through the foramen rotundum
V2
what does the V2 nerve enter when going through foramen rotundum
pterygoid palatine fossa
what does the zygomatic nerve supply?
lacrimal gland, oral mucosa, and nasal mucosa
what other nerve goes zygomatic nerve come together with to supply the lacrimal gland?
lacrimal nerve of V1
-zygomatic has a communicating branch that meets up with lacrimal nerve to supply lacrimal gland together
infraorbital goes through what foramen to get to face?
infraorbital foramen
what branches does zygomatic nerve have?
zygomaticotemporal n
zygomaticofacial n
what does the communicating branch connect?
V1 and V2
what 2 things go through the pterygoid canal?
vidian n of pterygoid canal
pterygoid branch of maxillary a
what 2 things does the pterygoid canal connect?
foramen lacerum and sphenopalatine foramen
what bone is associated with the pterygoid canal?
sphenoid bone
what goes through foramen lacerum??
NADA NOTHING DAMN IT IS STUPID
where do the preganglionic sympathetic fibers come from?
T1-L2
where do the postganglionic sympathetic fibers synpase
superior cervical ganglion
how does the postganglion symp fibers get to pterygoid palatine ganglion?
Hop on internal carotid plexus (ICA)
sympathetic fibers from the internal carotid plexus branch off to form what nerve?
deep petrosal nerve
where does the parasympathetic preganglionic fibers start?
geniculate ganglion of VII
what nerve branches off of geniculate ganglion to have parasympathetics fibers?
greater petrosal nerve
what is the path of parasympathetics?
geniculate ganglion of VII, greater petrosal, vidian nerve, pterygoid palatine ganglion
what fibers leave the pterygoid palatine ganglion?
postganglion sympathetic
postganglionic parasympathetic
what is the path of the sympathetics?
T1–superior cervical ganglion –> internal carotid plexus –> deep petrosal nerve –> vidian n –> pterygopalatine ganglion (JUST TRAVELS THROUGH)
what canal is superior/lateral to vomer bone?
pharyngeal canal
what are 2 things that go through pharyngeal canal?
pharyngeal n
pharyngeal branch of maxillary artery
what does the pharyngeal nerve innervate
pharyngeal mucosa structures
nasal pharynx
oral pharynx
what trigeminal division does greater and lesser palatine nerve
CN V2
what foramen does greater and lesser palatine nerve go through?
greater and lesser palatine foramen
what 3 things goes through palatine canal?
greater and lesser palatine n
descending palatine a (which give off greater and lesser palatine a)
what is the inferior exit of the pterygopalatine fossa?
palatine canal
what does the vidian nerve of pterygoid canal supply?
lacrimal gland, nasal, and palatal glands
what does the greater palatine nerve go through?
incisive canal
