It has a coating of wax:
(a) spinal cord
(c)
mixed nerve
(b) auditory
auditory nerve
(d) cerumen
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Cerumen keeps the eardrum pliable, lubricates and cleans the external auditory canal, waterproofs the canal, kills bacteria, and serves as a barrier to trap foreign particles (dust, fungal spores, etc.) by coating the guard hairs of the ear, making them sticky.
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