Age related changes
External ear changes include elongation of the lobule and this
calcification of ear cartilage
This percent of presbycusis cses are undefined
25%
Sensory presbycusis involved the loss of hair cells in this section of the cochlea
basal end
Caused by damage and loss of these
cochlear neurons
This is caused by damage to this structure
stria vascularis
Middle ear changes include increased density of ossicles and this
reduced blood supply to TM (gets stiff)
There is a lower prevalence of presbycusis in these environments
remote areas
Sensory presbycusis involves the flattening of this structure
Though it starts earlier in life, these are unaffected until later
pure tone thresholds
Hearing loss is progressive and begins around this age
30s-40s
This part of the inner ear changes with age
hair cells
the extent of HL, rate of decline, and onset is worse and earlier in this population
men
Sensory presbycusis leads to this kind of HL
high frequency HL
These frequencies are involved
lower and higher
Unlike neural presbycusis, people have good this
speech discrimination
Other common aging changes include this, which means age related vocal fold change
presbylarynges
true or false: presbycusis is more prevalent in women
FALSE equal
Sensory presbycusis leads to reduced this
speech discrimination
This is the central etiology of neural presbycusis
marked reduction in speech understanding
strial presbycusis responds well to this
amplification
This age related hearing change may make it difficult for older adults to engage in group conversation
reduced speech perception in noise
Describe the HL caused by presbycusis
Bilateral, symmetrical, progressive, irreversible
BONUS (general q): what is the word for normal cell death
apoptosis
BONUS (general Q): cell death due to injury is called this
necrosis
true or false: strial presbycusis occurs at both high and low frequencies
TRUE