asked 84.9k views
2 votes
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?

1 Answer

4 votes
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
answered
User Courtney Miles
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