Nose anatomy Flashcards
(36 cards)
what nerve controls nose muscles
Facial nerve- cranial nerve 7
what bones make up the lateral wall of the nasal cavity
nasal, maxilla, lacrimal, ethmoid, palatine, med pterygoid plate of spenoid
what bones make up the roof
nasal, frontal, ethmoid, sphenoid
what are the two divisions of the trigeminal nerve -Cr5
ophthalmic - V1
maxillary- v2
sensory and parasympathetic fibres
the anterior superior part of the lateral wall is supplied by which nerve?
V1 ophthalmic
ant ethmoidal nerve
what nerve supplies the posterior inferior part of the lateral wall?
V2 maxillary
greater palatine
what nerve supplies the post inf part of the medial wall/ septum
V2- nasopalatine nerve
what artery accompanies the maxillary nerve
branches of the maxillary branch of the external carotid
what arteries accompany the ophthalmic nerve
branches of the ophthalmic branch of the internal carotid artery
what nerve passes through the incisive canal in the hard palate
nasopalatine nerve, supplies the anterior palate
what is the arterial supply of the ant sup part of the lateral wall
ant post ethmoidal branches of the ophthalmic artery plus the facial artery
what is the arterial supply of the post inf part of the lateral wall
greater palatine and sphenopalatine branches of the maxillary artery
what does a dehiscent palatine canal lead to
severe epistaxis
what artery accompanies the nasopalatine nerve
sphenopalatine artery
arterial supply of the septum
septal branches of the maxillary and ophthalmic arteries
what ares is predisposed to epistaxis
little’s or kisselbach’s
what anastomosis exists in little’s area?
ant ethmoidal
greater palatine
sphenopalatine
labial branches of facial
where does the nasal vein enter the nasal cavity
foramen caecum
where are nasal veins connected to
cavernous sinus in the cranial cavity
where does the maxillary sinus enter
hiatus semilunaris
where does the frontal sinus enter
frontonasal duct and infundibulum to hiatus semilunaris
where do the posterior ethmoidal cells enter
superior meatus
where does the sphenoid sinus enter
sphenoethmoidal recess
where does the nasolacimal duct enter
inferior meatus