Exact(4)
Fine hairs directed outward and modified sweat glands that produce earwax, or cerumen, line the canal and discourage insects from entering it.
The sound-transmitting function of the outer ear is impaired when the ear canal becomes filled with tumour, infected material, or earwax (cerumen), so that sound cannot reach the tympanic membrane, or eardrum.
But there might be a biological reason for the decline: a buildup of cerumen, or earwax, on the speakers.
A. Ear wax, known to scientists as cerumen (pronounced suh-ROO-mun), traps dust and dirt particles to keep them from going down the ear canal to the eardrum, according to the American Academy of Otolaryngology.
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