Hearing And Balance Flashcards
Review
Long-term exposure to noise ranges of _____ dB and above can be damaging to vision and hearing.
A. 75.
B. 95.
C. 85.
D. 65.
A. 75
Why do many airlines offer sweets just before descending?
A. Motion sickness is reduced when blood sugar levels are kept steady.
B. Swallowing helps passengers ease ear discomfort caused by pressure changes.
C. This gives flight attendants an opportunity to check electronic devices, tray tables, and seat belts.
D. A carryover from the days of unpressurised aircraft, this is now just a charming tradition.
B. Swallowing helps passengers ease ear discomfort caused by pressure changes
Which of the following statements about noise and hearing is TRUE?
A. Deafness is measured by an audiogram.
B. Hearing can be improved by listening to music regularly.
C. Helmets are better than headsets at protecting the ears.
D. Protection ranges from Grade 1 (maximum) to Grade 5 (minimum).
A. Deafness is measured by an audiogram
Presbycusis is
A. a condition occurs when exposed to loud noises over a length of time without the person noticing.
B. age-related hearing loss.
C. a condition arising from a blocked outer canal.
D. a condition resulting from faulty ossicle bones and joints.
B. age-related hearing loss
A sound wave is categorised by which three factors?
A. pitch, loudness, intensity.
B. pitch, intensity, duration.
C. frequency, intensity, duration.
D. frequency, pitch, duration.
C. frequency, intensity, duration
Which of the following statements about noise and hearing is FALSE?
A. Frequency is measured in Hertz.
B. Deafness is measured by an audiogram.
C. Normal speech usually measures about 100 decibels.
D. Grade 5 is the maximum protection.
C. Normal speech usually measures about 100 decibels
Which system in the inner ear is responsible for maintaining equilibrium and contributing to spatial orientation?
A. vestibular system.
B. physical intelligence system.
C. auditory system.
D. cochlear system.
A. vestibular system
The inner ear contains:
A. vestibule.
B. auricle.
C. auditory ossicles.
D. tympanic membrane.
A. vestibule
The auditory ossicles are located in the
A. outer ear.
B. sinuses.
C. inner ear.
D. middle ear.
D. middle ear
How does a blocked Eustachian tube affect someone on an aircraft?
A. The person may suffer severe pain while the airplane is descending.
B. The person may suffer severe pain while the airplane is climbing.
C. The person will be unaffected while the airplane is descending.
D. The person will be unaffected in any pressurised aircraft.
A. The person may suffer severe pain while the airplane is descending
