Exam (elaborations)
Goshorn Industrial Final (1)
- Course
- MIE 305 NCSU Chapters 1-4
- Institution
- MIE 305 NCSU Chapters 1-4
Goshorn Industrial Final (1)
[Show more]
Seller
Follow
Content preview
Goshorn Industrial FinalWhat does CAOHC stand for? - ANS-Council for Accreditation of Occupational Hearing
Conservation
True or False: The OHC can be responsible for the diagnosis of hearing problems. - ANS-False
Name at least 6 activities the OHC is trained to carry out. - ANS-Take noise measurements
perform hearing screenings
refer to audiologists/physicians
Collect medical history
Perform a visual ear inspection
Maintain the Audiometer
True or False: Noise induced hearing loss can be reversed by medical treatment. - ANS-False
TTS stands for _______ and the OHC needs to catch these hearing losses before they become
_______. - ANS-Temporary Threshold Shift
Permanent Threshold Shifts
Name at least 3 agents besides noise that are toxic to the ear, especially when combined with
noise exposure. - ANS-Heavy metals (lead, trimethyltin)
Organic solvents (toulene, xylene)
Asphyxiants (CO)
What are 3 of the most useful abilities of human hearing? - ANS-Communication, perception of
warnings, diagnosing the sound of a machine malfunction
Inside the middle ear are situated three small bones called the ossicles, whose names are
_______, _______, and _______. The function of the ossicular chain is to _______. -
ANS-Malleus, Incus, Stapes
Conduct sound vibrations from the tympanic membrane to the middle ear.
In the inner ear, the snail-shaped end organ for hearing is the _______. - ANS-Cochlea
Noise exposed people tend to lose hearing first for the _________ tones. - ANS-High frequency
Under what conditions will the OHC need to diagnose hearing disorders? - ANS-If they are a
properly trained and certified audiologist or physician.
Give 3 examples of outer or middle ear conditions that could cause a conductive hearing loss. -
ANS-Otitis externa, otitis media, impacted cerumen
, Under what conditions should a worker refrain from wearing earplugs? - ANS-If they show
symptoms of external otitis
Name at least 5 possible causes of sensorineural hearing loss other than noise. -
ANS-Presbycusis, ototoxic drugs, genetics, prenatal infection, acoustic neuroma
Why is it important for the OHC to identify a one-sided hearing loss and refer the individual to an
ear specialist if he or she has not already received an examination for this condition? -
ANS-These results could be indicative of an acoustic neuroma
True or False: A hearing aid can restore hearing to normal. - ANS-False
If the air molecules themselves do not move very far, what is it that does travel, sometimes long
distances? - ANS-The energy created by the sound pressure wave.
Why was 20 uPa chosen as the zero reference level for the sound level meter? - ANS-20 uPa is
the smallest amount of sound pressure that can be detected by a normal ear.
What are the three most important properties of noise when hearing loss is considered? -
ANS-Frequency, intensity, and time
Most occupational noise exposures fluctuate in level during the work shift. The logarithmic
average sound exposure level normalized to an 8-hour day is called the _______ exposure
level, abbreviated _______. - ANS-8-hour time-weighted average
TWA
The relationship between level and duration of an allowance noise exposure is called the
_________. - ANS-exchange rate
What are the three main purposes of noise measurement in the occupational setting? -
ANS-Identify overexposed workers;
asses noise problems;
measure background levels in the audiometer rooms
The integrating SLM and noise dosimeter average sound levels _______. - ANS-Logarithmically
For most purposes OSHA requires the _______ (fast or slow) meter response. - ANS-Slow
True or False: When measuring the peak sound pressure level of an industrial impulse, one
should use the sound level meter's "impulse" setting. - ANS-False
What is the purpose of the octave band filter set? - ANS-To measure sound levels at particular
frequencies
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lydiaomutho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$11.46. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81531 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now