After Matthew punctured his eardrum the doctor informed him that he had ? Deafness 1. Hair cell 2. Nerve 3. Ultrasound 4. Conduction
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Matthew punctured his eardrum, which is part of the conduction system of the ear. Show more…
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A 54-year-old woman visited her doctor complaining of progressive hearing loss in her left ear. The doctor performed an otoscopic examination which showed no abnormalities and no wax buildup. In the following examination, the doctor struck a tuning fork and placed the stem of the tuning fork on the mastoid process of the patient's left temporal bone. The patient immediately stated that she could hear the tuning fork really well in both ears. After a moment or so, the patient noted that the tone had nearly died out. The physician then moved the tuning fork approximately two centimeters away from the same ear and the patient was unable to hear anything. The doctor explained that while someone with normal hearing will hear a vibrating fork when it is held against the mastoid process, the person will hear it better when it is held just outside the external acoustic canal. 1. Describe how sound is perceived, starting with the sound wave entering the external auditory canal. 2. What components of the patient's hearing mechanism were bypassed when the handle of the tuning fork was placed on her mastoid process? 3. Describe the type of hearing problem this patient has. Is it a conduction problem or a perception problem?
Adi S.
Deafness can be caused by one of two reason. The Lack of electrical impulses reaching the brain is associated to... a. Conductive deafness b. Failure of the outer ear (Pina) c. Nerve deafness or nerve damage
Madhur L.
Conduction deafness would most likely be caused by damage to the: a. cochlear nerve b. malleus, incus, and/or stapes c. hair cells in the cochlea d. vestibular apparatus
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