The Nasal Cavities I Flashcards
nasal cavities:
the two nasal cavities are the (uppermost/lowermost) part of the ___ tract
they are elongated, wedge-shaped spaces w/ a (small/large) inferior base & a (narrower/wider) superior apex
uppermost
respiratory
large
narrower
nasal cavities:
held open by an extensive ___ framework of ___ & ___
the smaller anterior regions are enclosed by the ___ whereas the larger posterior regions are more ___ within the ___
skeletal
bone & cartilage
nose
central
skull
nasal cavities:
the anterior apertures are the ___ opening into the inferior surface of the ___
the posterior apertures are the ___ opening into the ___
nares
nose
choanae
nasopharynx
nasal cavities are separated:
from each other by the ___
from the oral cavity below the ___
from the cranial cavity above by parts of the ___, ___, & ___ bones
nasal septum
hard palate
frontal, ethmoid, & sphenoid bones
general regions of the nasal cavities:
vestibule:
slightly expanded (anterior/posterior) part of the nasal passage just inside the ___
its lumen is lined w/ a continuation of ___ from the surface consisting of kiratinized, stratified squamous ___
anterior
nares
skin
epithelium
general regions of the nasal cavities:
vestibule:
the inferior region contains ___ & ___ glands & stiff ___ (___), which filter dust & debris from the air
limited above & behind by a curved ridge, the ___
sweat & sebaceous glands
hairs (vibrissae)
limen nasi
general regions of the nasal cavities:
vestibule:
at the limen nasi, there is a transition from ___ epithelium to ___ epithelium of the respiratory rgion
stratified squamous epithelium
respiratory epithelium
general regions of the nasal cavities:
respiratory region:
forms most of the surface of the nasal cavities & so covers the: (4)
except the area of: (1)
conchae
meatuses
floor
roof
olfactory epithelium
general regions of the nasal cavities:
respiratory region:
the respiratory epithelium consists of ciliated, pseudostratified, columnar epithelium w/ ___ cells
the underlying lamina propria contains numerous ___ glands
goblet cells
seromucous glands
general regions of the nasal cavities:
respiratory region:
the mucous membrane of the nasal cavities is continuous w/ that of the ___, the ___ air sinuses, & the ___ of the eye via the ___ duct & ___
nasopharynx paranasal air sinuses conjunctiva of the eye nasolacrimal duct lacrimal canaliculi
general regions of the nasal cavities:
respiratory region:
the mucous membrane of the nasal cavities is very thick & very vascular especially over the ___ presenting what is referred to as a ___ plexus
the mucous secretions & rich blood supply serve to ___ & ___ the air
conchae
cavernous plexus
warm & humidify
general regions of the nasal cavities:
respiratory region:
the mucous film is continually moved toward the ___ by ___ action
the movement continues moving the mucous & entrapped particles to the ___ for swallowing
b/c of its vascularity, the nasal mucous membrane becomes easily ___ & when this is combined w/ increased secretion of mucous, a ___ nose results
nasopharynx
ciliray action
oropharynx
swollen
stuffed-up
general regions of the nasal cavities:
olfactory region:
contains a highly specialized epithelium containing the ___ receptors for ___ sensation
olfactory epithelium is much (thicker/thinner) than typical respiratory epithelium
peripheral receptors
olfactory sensation
thicker
general regions of the nasal cavities:
olfactory region:
it lines the (dorsal/ventral) parts of the nasal cavities including the:
- upper posterior parts of the lateral (dorsal/ventral) wall
- back of the superior nasal ___
- ___ recess
- upper part of the ___
- roof of the ___
dorsal wall nasal concha sphenoethmoidal recess nasal septum roof of the nose
general features of the lateral walls of the nasal cavities:
nasal conchae:
three shelf-like projections of the lateral wall (3)
the ___ & ___ conchae are parts of the ___ bone
the ___ conha is a separate bone
superior
middle
inferior
superior & middle
ethmoid bone
inferior concha
