ASSESSMENT AND DIAGNOSTIC REASONING
4TH EDITION BY RHOADS AND SANDRA
◉ The hair cells of Corti and membrane of Corti:
a.produce a waxy lubricant.
b.protect the ear from foreign particles.
c.stimulate the eighth cranial nerve.
d.transmit vibrations to the ossicles. Answer: C
Vibrations from the tympanic membrane cause the delicate hair cells
of the organ of Corti to strike against the membrane of Corti,
stimulating impulses in the sensory endings of the auditory division
of the eighth cranial nerve.
◉ The organ of Corti is a coiled structure located inside the:
a.cochlea in the inner ear.
b.pars flaccida in the tympanic membrane.
c.eustachian tube.
d.lateral aspect of the pinna. Answer: A
,The cochlea is a coiled structure within the inner ear that contains
the organ of Corti.
◉ Mrs. Kinder is a 39-year-old patient who presents to the office
with complaints of an earache. In explaining to the patient about the
function of her ears, which ear structure would you tell her is
responsible for equalizing atmospheric pressure when swallowing,
sneezing, or yawning?
a.Eustachian tube
b.Inner ear
c.Pars flaccida
d.Triangular fossa Answer: A
The eustachian tube is a cartilaginous and bony passageway
between the nasopharynx and middle ear that opens briefly to
equalize the middle ear pressure with that of the atmospheric
pressure when swallowing, yawning, or sneezing.
◉ Mr. Sprat is a 21-year-old patient who complains of nasal
congestion. He admits to using recreational drugs. On examination,
you have noted a septal perforation. Which of the following
recreational drugs is commonly associated with nasal septum
perforation?
a.Heroin
, b.Cocaine
c.PCP
d.Ecstasy Answer: B
Long-term cocaine snorting causes ischemic necrosis of the septal
cartilage and leads to perforation of the nasal septum.
◉ A 5-year-old child presents with nasal congestion and a headache.
To assess for sinus tenderness, you should palpate over the:
a.sphenoid and frontal sinuses.
b.maxillary and frontal sinuses.
c.maxillary sinuses only.
d.sphenoid sinuses only. Answer: C
Only the maxillary and the frontal sinuses are accessible for physical
examination; however, the young child does not develop frontal
sinuses until 7 to 8 years of age.
◉ An infant's auditory canal, compared with an adult's, is:
a.short, narrow, and straight.
b.short and curved upward.
c.long, narrow, and curved forward.
d.short and curved downward. Answer: B