Which of the following causes of reduced hearing acuity would be classified as s

Question

Which of the following causes of reduced hearing acuity would be classified as sensory (vs. conduction) deafness?

A. ruptured tympanic membrane

B. synostosis of the joints associated with the auditory ossicles

C. accumulation of pus in a tympanic cavity related to otitis media

D. interference with impulse condition in a vestibulocochlear nerve

E. accumulation of excessive cerumen in the external acoustic meatus

#2- Which item is FALSE?

A. the margin of the lens of an eyeball is suspended from the edge of the iris by zonular fibers

B. in therory, the superior and inferior rectus muscles could be eliminated without seriously impacting movements of an eyeball

C. a very dim star typically "disapears" when one looks straight at it

D. landmarks on the retina devoid of photoreceptors include the ciliary part, iridial part, and disc of the optic nerve

E. more than one of the above are false

Explanation / Answer

     D. interference with impulse condition in a vestibulocochlear nerve

    EXPLANATION:

Sensorineural hearing loss (SNHL) is a type of hearing loss, or deafness, in which the root cause lies in the inner ear or sensory organ (cochlea and associated structures) or the vestibulocochlear nerve (cranial nerve VIII) or neural part.

SNHL accounts for about 90% of hearing loss reported.

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