Eustachian tube


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eustachian tube

 [u-sta´ke-an]
the narrow channel that connects the middle ear with the nasopharynx; it serves to equalize pressure on either side of the tympanic membrane (eardrum). In children this tube is wider and shorter than in adults, and thus children are especially prone to otitis media, infection of the middle ear that originates in the pharynx and travels through the tube. Called also auditory tube. (See also Plates.)

pha·ryn·go·tym·pan·ic (auditory) tube

[TA]
a tube leading from the tympanic cavity to the nasopharynx; it consists of an osseous (posterolateral) portion at the tympanic end, and a fibrocartilaginous (anteromedial) portion at the pharyngeal end; where the two portions join, in the region of the sphenopetrosal fissure, is the narrowest portion of the tube (isthmus); the auditory tube enables equalization of pressure within the tympanic cavity with ambient air pressure, referred to commonly as "popping of the ears."

eustachian tube

or

Eustachian tube

(yo͞o-stā′shən, -shē-ən, -kē-ən)
n. Anatomy
A slender tube that connects the tympanic cavity with the nasal part of the pharynx and serves to equalize air pressure on either side of the eardrum.

Eustachian tube

A narrow canal that connects the anterior wall of the tympanic cavity with the lateral wall of the nasopharynx.

Functions
Equalisation of pressure differences between the middle ear and the external atmosphere; mucus drainage from the middle ear.

Eustachian tube

A short passage leading backwards from the back of the nose, just above the soft palate, on either side, to the cavity of the middle ear. This allows air to pass to or from the middle ear cavity to balance the pressure on either side of the eardrum. (Bartolomeo Eustachi, Italian anatomist, b. around 1520 d. 1574).

eustachian tube

a tube passing from the pharynx to the middle ear in higher vertebrates, serving to equalize the pressure on either side of the TYMPANIC MEMBRANE. It opens during swallowing.

Eustachian tube

A tube of cartilage that connects the middle ear to the back of the throat. Its purpose is to equalize the pressure on either side of the eardrum.

Eustachio,

Bartolommeo E., Italian anatomist, 1524-1574.
eustachian catheter - a catheter used for catheterization of the middle ear through the eustachian tube.
eustachian cushion - a ridge in the nasopharyngeal wall posterior to the opening of the eustachian tube. Synonym(s): torus tubarius
eustachian tonsil - a collection of lymphoid nodules near the pharyngeal opening of the auditory tube. Synonym(s): tubal tonsil
eustachian tube - a tube leading from the tympanic cavity to the nasopharynx. Synonym(s): auditory tube; tuba eustachiana; tuba eustachii
eustachian tuber - a slight projection from the labyrinthine wall of the middle ear below the fenestra vestibuli (ovalis).
eustachian valve - an endocardial fold extending from the anterior inferior margin of the inferior vena cava to the anterior part of the limbus fossa ovalis. Synonym(s): valve of inferior vena cava
tuba eustachiana - Synonym(s): eustachian tube
tuba eustachii - Synonym(s): eustachian tube
References in periodicals archive ?
A new method to evaluate the eustachian tube function.
Typical remedies include decongestants or nasal sprays, but these aren't specific to helping open the eustachian tubes and don't provide immediate relief.
Magnetic resonance imaging of the development of otitis media with effusion caused by functional obstruction of the eustachian tube. Ann Otol Rhinol Laryngol 1997; 106: 422-31.
A critical view of the acoustical measurement of the opening of the Eustachian tube. Acta Otolaryngol 1984; 98: 250-4.
Balloon dilatation of the Eustachian tube during middle ear surgery: Study planning and first experiences during recruitment.
Assessment of the eustachian tube patency was done preoperatively in every patient by Valsalva's maneuver and tubal catheterization.
Physiology of the eustachian tube in the pathogenesis and management of middle-ear effusions.
"The 'pop' is the Eustachian tube connecting your middle ear to the back of your throat opening, letting air through."
Sometimes in young children, the tiny eustachian tube that equalises pressure in the ear becomes blocked.
A It sounds as if you may be suffering from a condition called eustachian tube dysfunction (ETD) which sounds a lot more complex than it actually is.
However, a huge bit of advice was missed--to help with Eustachian tube issues during take off and landing, a mom can discreetly nurse her infant.
The theory is that the fluid accumulated due to tissue swelling, resulting in Eustachian tube dysfunction and poor drainage of the middle ear.