Which of the following converts sound signals into magnetic impulses?
a. cochlear implant
b. endotracheal intubation
c. hearing aid
d. pressure-equalizing tube
a
Explanation:
a. cochlear implant: correct
b. endotracheal intubation: is a tube inserted through the mouth into the trachea to open the upper respiratory airway
c. hearing aid: is another term for "amplification device"
d. pressure-equalizing tube: assists in draining trapped fluid and equalizing pressure between the middle ear cavity and the atmosphere
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