Answers:
The apex of the cochlea as a --- mass, a --- stiffness and oscillates at a --- frequency.
A) high, high, low
B) high, low, high
C)high, high, high
D) low, high, high
E) low, low, high
MC Questions:
All of the following are major causes of SNHL except?
A) Meniere's
B) Acoustic Trauma
C) Presbycusis
D) Osteomas
E) Ototoxicity
F) Noise Exposure
A) high, high, low
B) high, low, high
C)high, high, high
D) low, high, high
E) low, low, high
-Base of cochlea = high frequency = lower mass, high stiffness
-Apex of cochlea = low frequency = higher mass, lower stiffness.
What structure provides energy for the cochlea?
The Stria Vascularis, provides energy by pumping K+ from perilymph to endolymph creating a chemical gradient.
All of the following are major causes of SNHL except?
A) Meniere's
B) Acoustic Trauma
C) Presbycusis
D) Osteomas
E) Ototoxicity
F) Noise Exposure
Free Response Question:
What is the most common treatment for SNHL?
Quick Facts:
Neonatal Hearing Impairment
-Risk factors include: BW<1500gm, congenital craniofacial anomalies, in utero infections, hyperbilirubinemia requiring transfusion, Apgar less than 5 / 7, mechanical ventilation longer than 5 days, head trauma, exposure to ototoxic agents.
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