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cells lining the trachea have whiplike motile extensions on their free surfaces. what are these extensions, what is their source, and what is their function?
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cells lining the trachea have whiplike motile extensions on their free surfaces. what are these extensions, what is their source, and what is their function?

User Josh Albert
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These extensions are cilia and they continually propel debris-laden mucus toward the pharynx. Their source is the micro tubules that exert pressure on the plasma membrane
User Courtney Miles
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