Nasal Cavity & Paranasal Sinuses Flashcards
what is the posterior openings of the nasal cavities into the nasopharynx
choanae
what is the epithelium of the nasal cavity
ciliated pseudostratified epithelium
what is the floor of the nasal cavity
maxilla
palatine
what are the posterior bony structures of the nasal cavity
perpindicular plate of the ethmoid
vomer
what is the superior bone of the nasal cavity
perpendicular plate of the ethmoid
what are under all of the conchaes
meatuses
what is the only conchae that is an individual bone
inferior conchae
what is the job for the airway to the lungs
warming air
what are the paranasal sinuses
maxillary sinus
frontal sinus
ethmoidal air cells
sphenoidal sinus
where do all the sinues drain into?
nasal cavity
what is the pathway of drainage for the frontal sinus
frontonasal duct –> infundibulum –> semilunar hiatus –> middle meatus
where does the anterior ethmoidal air cell drain into
middle meatus
where does the middle ethmoidal air cells drain into?
ethmoidal bulla
what are the boundaries of the maxillary sinus?
superior: orbit
medial: nasal cavity
lateral: infratemporal fossa
what is the opening into the maxillary sinus called?
maxillary ostuim
where will you find maxillary ostium?
inferior to ethmoidal bulla
what happens if you need to drain the maxillary sinus?
create an artificial opening
where could an infection of a maxillary tooth do?
spread into the sinus
what could an extraction of a tooth do to the maxillary sinus?
tear the membrane
where is the opening of the sphenoid sinus at?
sphenoethmoidal recess
what does the tendon of the levator palpebrae superioris muscle do
opens eye
what is the drainage of the lacrimal gland?
duct –> lacrimal lake –> lacrimal canaliculi –> lacrimal sac –> nasolacrimal duct –> inferior meatus
what nerves come off of nasocillary
anterior and posterior ethmoidal nn
what does the anterior ethmoidal branch supply
anterior septum and lateral wall
what does the posterior ethmoidal branch supply
posterior septum and lateral wall
what does the sphenopalatine branch supply
lower septum and lateral wall
what are the 2 branches of the sphenopalatine
posterior septal
posterior lateral nasal
what is the area with nose bleeds and has all the vasculature
kisselbach’s area
what are the 3 places that the venous drain nasal cavity
facial
pterygoid plexus
cavernous sinus
where is special sensory from?
olfactory nerve
where are the parasympathetics from FOR PARANASAL SINUS?
greater petrosal: CN VII
where are the sympathetics from FOR PARANASAL SINUS
deep petrosal: ICA
what provides general sensation FOR PARANASAL SINUS?
V2
CN V1 sensory nerve?
Nasociliary
V2 sensory nerves? (5)
infraorbital
nasopalatine
anterior sup alveolar
posterior superior/inferior lateral nasal n
