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Functional anatomy of the Eustachian tube.
Int J Immunopathol Pharmacol. 2010 Jan-Mar; 23(1 Suppl):4-7.IJ

Abstract

The Eustachian tube (ET) is divided in 3 portions: a bony portion, a cartilaginous portion, and a junctional portion. From an anatomical-functional point of view, the bony portion of ET is the region of ventilation and clearance of secretions, and is lined by pseudostratified, ciliated, columnar epithelium, with an anti-gravitational direction of the drainage. The ET in the bony portion is in a state of forced opening. The cartilaginous portion is instead the heart of this dynamic system tube, because the mechanism of opening and closing of the tube is at this level. ET is normally closed, and it opens only during swallowing, being essential for good functioning of the middle ear, because it provides ventilation from the nasopharynx to the middle ear, and, at the same time, clearance of secretions from the middle ear-mastoid unit to the nasopharynx. Moreover, the ET protects the middle ear against nasopharyngeal pressure variations, ascending secretions, and microorganisms. The ability to develop all these functions makes the tube a complex organ.

Authors+Show Affiliations

Otolaryngology Department, University Hospital, Modena, Italy. elio.cunsolo@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

20152070

Citation

Cunsolo, E, et al. "Functional Anatomy of the Eustachian Tube." International Journal of Immunopathology and Pharmacology, vol. 23, no. 1 Suppl, 2010, pp. 4-7.
Cunsolo E, Marchioni D, Leo G, et al. Functional anatomy of the Eustachian tube. Int J Immunopathol Pharmacol. 2010;23(1 Suppl):4-7.
Cunsolo, E., Marchioni, D., Leo, G., Incorvaia, C., & Presutti, L. (2010). Functional anatomy of the Eustachian tube. International Journal of Immunopathology and Pharmacology, 23(1 Suppl), 4-7.
Cunsolo E, et al. Functional Anatomy of the Eustachian Tube. Int J Immunopathol Pharmacol. 2010 Jan-Mar;23(1 Suppl):4-7. PubMed PMID: 20152070.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Functional anatomy of the Eustachian tube. AU - Cunsolo,E, AU - Marchioni,D, AU - Leo,G, AU - Incorvaia,C, AU - Presutti,L, PY - 2010/2/16/entrez PY - 2010/2/16/pubmed PY - 2010/4/9/medline SP - 4 EP - 7 JF - International journal of immunopathology and pharmacology JO - Int J Immunopathol Pharmacol VL - 23 IS - 1 Suppl N2 - The Eustachian tube (ET) is divided in 3 portions: a bony portion, a cartilaginous portion, and a junctional portion. From an anatomical-functional point of view, the bony portion of ET is the region of ventilation and clearance of secretions, and is lined by pseudostratified, ciliated, columnar epithelium, with an anti-gravitational direction of the drainage. The ET in the bony portion is in a state of forced opening. The cartilaginous portion is instead the heart of this dynamic system tube, because the mechanism of opening and closing of the tube is at this level. ET is normally closed, and it opens only during swallowing, being essential for good functioning of the middle ear, because it provides ventilation from the nasopharynx to the middle ear, and, at the same time, clearance of secretions from the middle ear-mastoid unit to the nasopharynx. Moreover, the ET protects the middle ear against nasopharyngeal pressure variations, ascending secretions, and microorganisms. The ability to develop all these functions makes the tube a complex organ. SN - 0394-6320 UR - https://www.unboundmedicine.com/medline/citation/20152070/Functional_anatomy_of_the_Eustachian_tube_ DB - PRIME DP - Unbound Medicine ER -
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