what are the muscular structures that help in closing and opening of the aperture of the canal
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tensor veli palatini muscle
The eustachian tube opens upon swallowing or yawning by contraction of the tensor veli palatini muscle. Defective tensor veli palatini muscle function in cleft palate results in eustachian tube dysfunction. The role of the levator veli palatini muscle is unclear.
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The muscles of the eustachian tube system help open and close the tube, thus allowing it to perform its function.
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