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lturne lturne
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6 years ago
The Eustachian tube
 
  a. serves as a ventilating tube.
  b. connects the middle ear cavity with the pharynx.
  c. opens each time you swallow.
  d. all of the above
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gimickelgimickel
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6 years ago
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lturne Author
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6 years ago
Good timing, thanks!
halyna
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Yesterday
Thanks
SlimyPencil
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2 hours ago
Brilliant ツ
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