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8 Cards in this Set

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PHARYNGEAL OSTIUM OF THE AUDITORY TUBE

-OPENING...
3. Pharyngeal ostium ofthe auditory tube

a. Opening on the lateral wall of the nasopharynx, superior to the
superior border ofthe superior pharyngeal constrictor
PHARYNGEAL OSTIUM OF THE AUDITORY TUBE

TORUS TUBARIUS
-curved eminence? where?
-salpingopharyngeal fold?
-"pharyngeal recess"?
3. Pharyngeal ostium ofthe auditory tube

b. Torus tubarius
1. Curved eminence superior and posterior to the pharyngeal ostium
ofthe auditory tube; formed by the cartilage ofthe auditory tube

2. The salpingopharyngeal fold descends from the posterior part of
the torus tubarius and contains the salpingopharyngeus muscle;
the pharyngeal recess is the depression posterior to the torus
tubarius and salpingopharyngeal fold
PHARYNGEAL OSTIUM OF THE AUDITORY TUBE

TORUS LEVATORIUS
3. Pharyngeal ostium ofthe auditory tube

c. Torus levatorius: elevation between the pharyngeal ostium ofthe au-
ditory tube and soft palate; formed by the levator veli palatini muscle
AUDITORY TUBE

-canal extending from...
4. Auditory tube

a. Canal extending from the pharyngeal ostium ofthe auditory tube to
the tympanic cavity; its anterior two-thirds is cartilaginous and its
posterior one-third lies within the inferior semicanal ofthe musculo-
tubal canal
AUDITORY TUBE

RESPIRATORY INFECTIONS...
4. Auditory tube

b. Clinical notes

1. Respiratory infections may spread from the nasopharynx to the
tympanic cavity via the auditory tube
AUDITORY TUBE

-equalization of air? where?
4. Auditory tube

b. Clinical notes

2. The auditory tube allows for equalization of air pressure between
the nasopharynx (outside air) and the tympanic cavity
AUDITORY TUBE

NO AIR EXCHANGE B/W NASOPHARYNX & TYMPANIC CAVITY
4. Auditory tube

b. Clinical notes

a. If air exchange between the nasopharynx and the tympanic
cavity is prevented, perhaps by adenoids, the difference in air
pressure on the two sides ofthe tympanic membrane may
result in hearing loss due to stretching and decreased sensi-
tivity ofthe tympanic membrane
AUDITORY TUBE

EQUALIZATION OF AIR PRESSURE...BY SWALLOWING/YAWNING
-name muscles in relation.
4. Auditory tube

b. Clinical notes

b. Since the salpingopharyngeus, levator veli palatini, and ten-
sor veli palatini attach to the cartilaginous part of the audi-
tory tube, opening ofthe auditory tube and equalization of air
pressure may be achieved by contracting these muscles by
swallowing or yawning