Nose anatomy Flashcards
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
what are the frontal, sphenoid and ethmoid sinuses supplied by
supra orbital and ethmoidal branches of the ophthalmic nerve and ophthalmic artery
what is the maxillary sinus supplied by
maxillary nerve and maxillary artery
where does nasal cavity lymph drain to?
submandibular nodes
retropharyngeal nodes
upper deep cervical nodes
jugulodigastric node
where is the opening of the auditory tube
nasopharynx
what is Waldeyer’s ring?
a protective tonsillar ring around the openings of the resp and GI tracts
where are the adenoid/ pharyngeal tonsils found?
roof and post wall of the nasopharynx
where are the tubal tonsils found
around the opening of the auditory tube
what are the frontal, ethmoid and sphenoid sinuses supplied by
supra orbital and ethmoidal branches of the ophthalmic nerve and artery
what type of nerves are they
sensory and parasympathetic
what does the posterior choanae enter into
the nasopharynx
what can lead to middle ear infections
enlargement of the tubal tonsils
what can swelling of the pharyngeal tonsil lead to
mouth breathing due to airway obstruction
