The excellent supply of blood to the mucoperiosteal lining of the nasal chambers
The cilia continuously drive fluids on the surface to the (front) (rear).
Finer particles carried by the inflowing air are trapped by the
conditioning of the inflowing air depends upon direct contact with the m
The conchae serve to increase the s
of the mucoperiosteum in the
The olfactory epithelium contains special hair cells which can detect individual
s found in the air. Thus, the sense of smell tests the
y of inflowing
The paranasal sinuses are cavities found in the middle layer of various skull
The primary function of the larynx is to control the volume of
through the air passageways to and from the alveoli. The larynx also produces selected
s in the moving column of air. The epiglottis of the larynx acts like
to prevent food items from entering the lower air passageways.
The vocal folds are used to control the size of the
g between them,
called the r
Valsalva's maneuver is used to provide support for a strenuous effort with the
s. When Valsalva's maneuver ends with a sudden opening of the
rima glottidis, the result is a
A column of air may be chopped into bits of s
. The frequencies of the
vibrations are the
h, varied by a change in the
n of the vocal cords.
A variety of situations may occlude a bronchus: A foreign
aspirated. The wall of the tube may constrict in a bronchial
m. The lining of the
tube may become _________n with fluid and close the passageway.
The air in the passageways does not take part in actual
Therefore, it is often called "