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8 Cards in this Set
- Front
- Back
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
