Eustachian tube
(Redirected from Pharyngeal opening of auditory tube)
Eustachian tube
The Eustachian tube, also known as the auditory tube or pharyngotympanic tube, is a tube that links the pharynx to the middle ear. In humans and other land vertebrates, the Eustachian tube equalizes the pressure in the middle ear with the pressure in the atmosphere outside the body.
Function[edit | edit source]
The primary function of the Eustachian tube is to ventilate the middle ear space, ensuring that its pressure remains at near normal ambient air pressure. The secondary function of the Eustachian tube is to drain any accumulated secretions, infection, or debris from the middle ear space. Several small muscles located in the back of the throat and palate control the opening and closing of the tube.
Anatomy[edit | edit source]
The Eustachian tube is approximately 35 mm long. It is named after the sixteenth-century anatomist Bartolomeo Eustachi.
Clinical significance[edit | edit source]
Dysfunction of the Eustachian tube may lead to otitis media, or inflammation of the middle ear. Symptoms may include ear pain, ringing in the ears (tinnitus), and hearing loss, which can be temporary or permanent.
See also[edit | edit source]
References[edit | edit source]
External links[edit | edit source]
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Contributors: Prab R. Tumpati, MD
