Nose and Nasal Cavity Flashcards
What nerve supplies the majority of skin on the nose
infraorbital nerve (V2) superior bridge of nose from V1
What do the two halves of the nasal cavity form
nasal fossae
What separates the nasal fossae
median nasal septum
What structures make up the floor of the nasal fossa
palatine process of maxilla
horizontal plate of palatine
What bones make up the roof of the nasal fossa
nasal
frontal
ethmoid
sphenoid
What are the 6 bones that make up the bones of the lateral wall of the nasal fossa
maxilla ethmoid palatine inferior concha nasal lacrimal
What forms the middle and superior conchae
Ethmoid bone
Where is the different nasal meatus located
space below the concha of same name
What are the surface of the meati covered by
Pseudostratified columnar epithelium
Where is olfactory epithelium located
superior part of each nasal fossa – in the sphenoethmoidal recesses
Where does most of the blood supply come from for the nasal cavity
nasal branches from the sphenopalatine artery (branch from the maxillary artery)
What provides general sensory to the anterior region of the nasal cavity
Ethmoidal nerves of V1
What provides general sensory to the majority of the nasal cavity
nasal nerves of V2
What provides general sensory innervation to the vestibule of the cavity
infraorbital nerve–V2
What provides parasympathetic secretomotor innervation to the nasal cavity
pregang: greater petrosal nerve
postgang: sphenopalatine ganglion
What are the functions of the paranasal sinuses
contribute to ones facial features
contribute to resonance qualities of voice
contribute to air exchange, moistening and warming the air
What are the four paired sinuses
Frontal Sinuses
Ethmoid air cells
sphenoid sinuses
maxillary sinuses
Where do the frontal sinuses drain
through the frontonasal duct into the middle meatus
Which position do the frontal sinuses drain best
upright position
Where do the ethmoid air cells drain to
superior and middle meatus
Where do the sphenoid sinuses drain to
anteriorly into the sphenoethmoidal recess
How do the sphenoid sinuses best drain
in face down position
Where do the maxillary sinuses drain to
drain into the middle meatus
Which position do the maxillary sinuses drain best
side posture
