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The External acoustic meatus (auditory canal) is lined with ceruminous glands.
Solución
To determine which structure is lined with ceruminous glands, let’s analyze the options provided:
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Pharyngotympanic (auditory) tube: This tube connects the middle ear to the nasopharynx and is not lined with ceruminous glands.
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Auricle (pinna): This is the external part of the ear that collects sound waves, but it does not contain ceruminous glands.
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External acoustic meatus (auditory canal): This is the canal that leads from the outer ear to the eardrum. It is lined with ceruminous glands, which produce earwax (cerumen).
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Tympanic membrane: Also known as the eardrum, it separates the outer ear from the middle ear and does not have ceruminous glands.
Based on this analysis, the structure lined with ceruminous glands is the External acoustic meatus (auditory canal).
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Simplifique esta solución Mind Expander
The structure lined with ceruminous glands is the external acoustic meatus, commonly known as the auditory canal. These specialized glands produce earwax, or cerumen, which plays a vital role in protecting the ear by trapping dust, debris, and microorganisms, helping to keep the inner ear clean and dry.
Interestingly, body movements can aid earwax movement, allowing it to migrate out of the ear canal naturally. Too much cerumen buildup can lead to discomfort or hearing issues, so it’s essential to maintain ear health! Just remember, earwax is your ear’s friend—not something to eliminate completely!
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