Exam 3 study guide-2

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Syracuse University *

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212

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Chemistry

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Dec 6, 2023

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Exam 3 study guide 1. Where are the inner and outer hair cells located? (General area) 2. List the transformations of energy (how energy changes) from outer to inner ear. We only talked about 3 in the first unit, but KNOW and REMEMBER there are actually 4. Mechanical 3. List the middle ear bones from tympanic membrane to the oval window. 4. What do the muscles of the middle ear do? 5. What is the eustachian tube? What does it do? Allows air to enter middle ear and fluid to drain out of it 6. What is the function of the outer ear? 7. What types of equipment would you use to obtain air conduction thresholds and bone conduction thresholds? When would you use each and on which patients? 8. What does air conduction testing tell us? 9. What does bone conduction testing tell us? Whether the loss is due to a problem in either the outer/middle ear or inner ear 10. Why would we use one over the other?
11. Define in general terms: what is an air bone gap? 12. Know what a conductive, sensorineural, and mixed HL looks like on an audiogram 13. Know the symbols for: a. Air conduction i. UNMASKED left ear and right ear X (left), O (right) ii. Masked left ear and right ear Square (left), circle (right) Bone conduction iii. Masked and unmasked ears ] (left), [ (right) 14. Know how to describe a hearing loss when reading an audiogram: a. Unilateral vs. bilateral Unilateral is in one ear (asymmetric), bilateral is in both b. Symmetric vs. asymmetric Symmetric has them within 10dB away from each other, asymmetric has them >10dB away from each other c. Degree of loss Normal, mild, moderate, moderately severe, severe, profound d. Type of loss Conductive – Air conduction abnormal, bone conduction normal Sensorineural – Air and bone conduction abnormal, within 10dB away from each other Mixed – Air and bone conduction abnormal, >10dB away from each other 15. Complete the following chart about degrees of hearing loss and corresponding threshold levels: Threshold in dB HL Degree of hearing loss <26dB Normal hearing
26-40dB Mild loss 41-55dB Moderate loss 56-70dB Moderately Severe loss 71-90dB Severe loss >90dB Profound loss 16. Be familiar with the following pathologies: a. Atresia b. Microtia c. Otitis Media d. Noise Induced HL 17. Define conductive hearing loss. Air conduction abnormal, bone conduction normal -Outer/middle ear 18. Define sensorineural hearing loss. Air and bone conduction abnormal, within 10dB away from each other -Inner ear, noise induced 19. For the pathologies we discussed in class, know which are outer, middle, and sensorineural pathologies. 20. Generally, what do hearing aids do? 21. Who would be the best candidate for a hearing aid? 22. What are the types of hearing aids we talked about in class?
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23. What are the benefits of a digital hearing aid? 24. What is an FM system? 25. What is a body aid and who is it most appropriate for? 26. Which hearing aid style would you recommend for a child? 27. What type of hearing aid is best for someone with excessive cerumen and moisture problems in the ear canal? 28. Know the parts of the hearing aid and what they do 29. Generally, what do Cochlear Implants (CI) do? 30. What is mapping/ CI programming in regards to cochlear implants? 31. Know the parts of the CI- where they go, what they do, etc. 32. According to Deaf activists and people belonging to deaf culture, what are reasons why NOT to get a CI? 33. Know who would be the best candidate for a CI? 34. What is the youngest age a child can get a CI? 35. What are surgical risks associated with CI?