File:Eustacian tube angle.jpg

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Newborn to adult auditory tube

Auditory tube = Eustachian, otopharyngeal or pharyngotympanic tube.

Connects middle ear cavity to nasopharynx portion of pharynx

Ventilation - pressure equalization in the middle ear

Clearance - allow fluid drainage from the middle ear Tube is normally closed and opened by muscles

At birth - shorter (17-18 mm), narrower and runs almost horizontal Tube is opened by a single muscle, tensor palati muscle

Adult - longer (twice as long), wider and runs at approximately 45 degrees to the horizontal. Tube is opened by two separate muscles, tensor palati and levator palati


Reference

<pubmed>17364173</pubmed>

File history

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current23:06, 13 May 2009Thumbnail for version as of 23:06, 13 May 2009609 × 458 (48 KB)MarkHill (talk | contribs)Newborn to adult Eustachian (auditory, otopharyngeal or pharyngotympanic) tube. Connects middle ear cavity to nasopharynx portion of pharynx Ventilation - pressure equalization in the middle ear Clearance - allow fluid drainage from the middle ear Tube
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