The Nose and Paranasal Sinuses Flashcards
Nasal airway functions
warms and humidify inhaled air
important for neonates
immune barrier
Nasal Mucousal lining - the first 1/3rd epithelium type
stratified squamous epithelium
Nasal Mucousal lining - the poterior 2/3rd epithelium type
pseudostratified columnar epithelium
Sense of smell is innervated by what CN?
olfactory nerve
drainage and aeration of the middle ear is by….
Eustachian tube
turbinates in the nose are….
bony scroll like projections from lateral wall of the nose
nasolacrimal duct is the drainage pathway of ….
lacrimal secretions
(tears)
runny nose when crying
How many paranasal sinuses?
2 frontal
2 maxillary
Sphenoid
Ethmoid air cells
Frontal sinus drains into the ……….. via the …………
frontal recess
middle meatus
Where on the face is the frontal sinus found?
behind the eyebrows
Ethmoid sinuses (anterior) drains into….
middle meatus
Posterior ethmoid sinus drains into …..
superior meatus
where are the ethmoid sinuses found?
between the eyes
sphenoid sinus drains via the
sphenoethmoidal recess
optic nerve runs above what sinus
sphenoid
What runs either side of the sphenoid sinus?
internal carotids
Where are the maxillary sinuses?
behind each cheek
maxillary sinus drains via what?
middle meatus
Middle meatus drainage:
Frontal, Anterior ethmoids, Maxillary
Superior meatus drainage:
posterior ethmoids
Sphenoethmoidal recess drainage:
sphenoid
Inferior meatus drainage:
nasolacrimal duct
Medical management of sinusitis
remove allergic triggers
treat infection
reduce inflammation (steroids)
Sinusitis surgery would be to….
remove polyps
open up sinus drainage pathways
nasal innervation is almost all
CNV
V1 and V2
(opthalmic and maxillary)
post nasal space contents
adenoids
Eustachian tube opening
soft palate muscles attach to Eustachian tube to allowing swallowing
