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Anat: Nasal Cavity
Exam 2: Lecture 9
44
Anatomy
Graduate
09/16/2013

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Cards

Term
functions of nasal cavity (3)
Definition

respiration: air is warmed, humidified, & filtered

olfaction: site of smell

phonation: amplifies & alters sound

Term
3 bony prominences occupying lateral nasal wall; assist in channeling air flow
Definition
turbinates (conchae)
Term
space beneath turbinate; these are named according to their affiliated turbinate
Definition
meatus
Term
independent bone in lateral nasal wall that is covered with thick mucous membrane
Definition
inferior turbinate
Term
lacrimal duct empties into this meatus
Definition
inferior meatus
Term
turbinates in lateral nasal wall that are part of ethmoid bone (2)
Definition

middle turbinate

superior turbinate

Term

frontal & ethmoid sinuses drain to this meatus;

meatus that houses the following landmarks:

unicinate process, ethmoid bulla, semilunar hiatus

Definition
middle meatus
Term
rounded projection of lateral wall of middle turbinate/meatus; ethmoid air cells are found just laterally to this
Definition
ethmoid bulla
Term
space between bulla and uncinate process
Definition
semilunar hiatus
Term
turbinate in lateral nasal wall that includes olfactory epithelium (smell function from CN I)
Definition
superior turbinate
Term
components of nasal septum (3)
Definition

perpendicular plate of ethmoid bone

vomer

septal cartilage (quadrangular cartilage)

Term
N. branches off opthalmic N. (CN V1) that supply superior part of lateral & medial walls of nasal cavity
Definition
anterior & posterior ethmoidal N.s
Term
N. which innervates skin at tip of nose & some of nasal cavity
Definition
anterior ethmoidal N.
Term
branches of this N. exit skull through foramen rotundum; branches ultimately provide sensory innervation to inferior part of lateral walls of nasal cavity
Definition
maxillary N. (CN V2)
Term
branch of V2 that courses down nasal septum on vomer bone
Definition
nasopalatine N.
Term
N. supplying nasal cavity with smell special sense
Definition
CN I
Term
parasympathetic innervation to nasal cavity comes from this CN
Definition
facial N. (CN VII)
Term
parasympathetic postganglionic cell bodies in this ganglion located in pterygopalatine fossa give rise to postganglionic fibers
Definition
pterygopalatine ganglion
Term
parasympathetic postganglionic fibers from pterygopalatine ganglion join branches of V2 that enter nasal cavity by passing through this foramen
Definition
sphenopalatine foramen
Term
target of parasympathetic innervation (from CN VII) in nasal cavity
Definition
mucosal lining (for mucosal secretion)
Term
target of sympathetic innervation (from superior cervical ganglion) in nasal cavity
Definition
blood vessels
Term
sympathetic postganglionic cell bodies in superior cervical ganglion of neck give rise to postganglionic fibers which travel to this fossa via *blood vessels
Definition
pterygopalatine fossa
Term
sympathetic postganlionic fibers join branches of this N. & enter the nasal cavity by passing through sphenopalatine foramen to supply blood vessels
Definition
CN V2 (maxillary N.)
Term
overall vascular supply of nasal cavity arises from these structures
Definition
external & internal carotid A.s
Term
internal carotid A.'s supply to nasal cavity occurs via these A.s (2)
Definition
anterior & posterior ethmoidal A.s
Term
anterior ethmoid A. continues anteriorly from nasal cavity to supply this region
Definition
tip of nose
Term
external carotid A.'s supply to nasal cavity occurs via this branch of maxillary A.; A. passes through sphenopalatine foramen (located on lateral nasal wall)
Definition
sphenopalatine A.
Term
A. supplying nasal septum; branch of sphenopalatine A.
Definition
septal A.
Term
V.s draining nasal cavity (2)
Definition
ophthalmic V.s (via anterior & posterior ethmoidal V.s to orbit) sphenopalatine V. (to pterygoid plexus then on to maxillary V.)
Term
sinus drained by frontonasal duct to middle meatus
Definition
frontal sinus
Term
N. & vessels supplying frontal sinus
Definition
supraorbital N. & vessels
Term
ethmoidal air cells in around this sinus drain primarily though ostia under the middle turbinate
Definition
ethmoid sinus
Term
sinuses that drain through ostia in sphenoethmoid recess (above superior turbinate)
Definition
sphenoid sinus
Term
N. & vessels supplying ethmoid sinus
Definition
anterior & posterior ethmoidal N. & vessels
Term
structures found superior to sphenoid sinus (2)
Definition
pituitary gland
middle cranial fossa
Term
structures found lateral to sphenoid sinus (2)
Definition
cavernous sinus
interior carotid A.
Term
N. & vessels supplying sphenoid sinus
Definition
posterior ethmoidal N. & vessels
Term
largest of the sinuses
Definition
maxillary sinus
Term
maxillary sinus drains into this region
Definition
middle meatus under middle turbinate
Term
surface found anterior to maxillary sinus
Definition
facial surface
Term
structure found superior to maxillary sinus
Definition
orbit
Term
structure found medial to maxillary sinus
Definition
nasal cavity
Term
structures found inferior to maxillary sinus (2)
Definition
alveolar processes (teeth)
oral cavity
Term
N. & vessels supplying maxillary sinus
Definition
superior alveolar N.s & vessels (posterior superior alveolar, middle superior alveolar, & anterior superior alveolar N.s and vessels)
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