nasal cavity Flashcards
the skeletal framework of the nasal cavity
bonr and cartilaeg
the anterior region of teh nasla cavity is enclosed by the
external nose
the posteriro region of teh nasal cavity is
central within the skull
what are teh nares
the anterior apertures that open into the inferior base of the nasal cavity
whjat are teh choanae
the posterior aperatures that open into teh nasopharynx
the nasal cavity is seperated by
cranial cavity , frontal spehnoid ethmoid
hard palate
midline nasal septum
the external nose posteior parts are
bony : nasal bones and parts of teh maxilla
the external nose anteror parts are
cartilaginous
midline : single septal cartillage anterior aspect of the nasal septum
on each side ; lateral process of spetal cartiallage, major alar cartillage and 3-4 minor alar cartillage
the floor of the nasal cavity consists of
hardpalate : palatine process of maxilla and the horizantel plate of palatine bone
soft tissuesof teh external nose
the openings in the floor of the nasal cavity
nares and teh incisive canal
the roof of the nasal cavity
cribriform plate of ethmoid bone
anterior part of the roof of teh nasal cavity is formed by
nasal spine of frontal bones
nasal bones
laterla process of septal cartillage and the major alar cartillage
the medial wall of the nasal cavity
mucosa covered wall
anteriorly septal nasal cartillage
posteriorly ; mainly the vomer and teh ethmoid bbone
the lateral wall of the nasal cavity consists of
inferior conchae
ethmoidal labyrinth and uncinate process
perpendicular plaet of palatine bone
medial plaet of pterygoid process of spehnoid bone
medial surface of teh lacrimal and the maxillae
the conchae of teh lateral wall of teh nasal cavity projects in what direction
medially inferiorly
thr space below each conchae is called the
meatus
semilunar hiatus
opening underneath teh ethmoidal bulla
location to the oepnings of the anteriro ethmoidal sinus , maxillary and frontal sinus in the middle nasal meatus
nasolacrimal duct
the tears of theye drain there
inferior nasal meatus
what divides teh nose into 4 air channels
the conchae
name the meatus and the recess
suerior, inferiro , middle meatus and the spehonethmoidal recess between teh superiro nasal concha and the roof of he nasal cavity
what are the three general regions of the nasal cavity
nasal vestibule contaons hair follicles and covered by skin, respiratory region largest region rich in neurovascular supply , olfactory region at the apex of each nasal cavity
blood supply pf the nasal cavity
sphenopaltine arteyr : largest terminal branch of the maxillary artery
greater palatine arteyr branch of teh maxillary aretry going throughteh incisive canal
opthalmic arteyr branches
facial
where is teh anastomses located in teh nos e
anteriro region of teh medial wall
anastomses area is callled
kisselbachs area
anothe rname for nosebleeds
epistaxis
nerve supplyof teh nasal cavity
olfactory nerve special sense
general senstaion : nasal branches from the maxillary nerve
bramches from teh opthalmic nerve
paranasla sinus
frontal, maxillary , ethmoidal air cells , sphenoidal
Features of the paranasal sinuses
covered with respiratory mucosa, ciliated and mucous secreting
mainly draisn into the middle nasal meatus
innervated by teh trigeminal nerve
teh function of the nasal sinus
give resonance to tehvoooice and lighten the weight of the skull
