| 21. | The ear canals also have numerous sebaceous glands.
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| 22. | Visible hair that protrudes from the ear canal is sometimes trimmed for cosmetic reasons.
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| 23. | The ear canals are jostled and jiggered by the studious avoidance of familiar harmonic guideposts.
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| 24. | But one of the devices that Kalinowski has developed fits entirely in the ear canal.
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| 25. | There may be some bleeding from the ear canal if the eardrum has been ruptured.
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| 26. | Also, the cotton head may fall off and become lodged in the ear canal.
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| 27. | Sound waves travel through the ear canal and hit the tympanic membrane, or eardrum.
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| 28. | Normally, the air pressure in the ear canal is the same as ambient pressure.
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| 29. | :: Passing urine through the urethra, as opposed to through the ear canal?
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| 30. | The ear canal is not physically occluded by an earphone that operates via cartilage conduction.
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