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The cartilaginous part of the Eustachian tube is about 24 mm in length and is formed of a triangular plate of elastic fibrocartilage, the apex of which is attached to the margin of the medial end of the bony part of the tube, while its base lies directly under the mucous membrane of the nasal part of the pharynx, where it forms an elevation ...
Ostmann's pad of fat (Ostmann fatty bodies) is a thin triangular layer of fatty tissue found in the Eustachian tube of the ear. It is seen on the lateral side of the cartilaginous part of Eustachian tube. [1] Its function is to keep the tube closed and thereby protect it from reflux of nasopharyngeal secretions.
Anatomic obstruction within the proximal cartilaginous eustachian tube. [5] Dilatory Eustachian tube dysfunction: Functional, dynamic (muscle failure), or anatomical obstruction of the Eustachian tube; Baro-challenge induced Eustachian tube dysfunction: Eustachian tube dysfunction which generally features a normal otoscopy and normal tympanometry
Balloon Eustachian tuboplasty (BET) [1] is a minimally invasive procedure for the causal treatment of Eustachian tube dysfunction (ETD), an often-chronic disorder in which the regulation of middle ear pressure and the removal of secretions are impaired. The dysfunction often causes significant discomfort in affected patients and can trigger ...
Elastic cartilage, fibroelastic cartilage or yellow fibrocartilage [1] is a type of cartilage present in the pinnae (auricles) of the ear giving it shape, [2] provides shape for the lateral region of the external auditory meatus, [3] medial part of the auditory canal [3] Eustachian tube, corniculate and cuneiform laryneal cartilages, [3] and the epiglottis.
The torus tubarius (or torus of the auditory tube) is an elevation of the mucous membrane of the nasal part of the pharynx formed by the underlying base of the cartilaginous portion of the Eustachian tube (auditory tube). The torus tubarius is situated behind the pharyngeal orifice of the auditory tube. [1]
It arises from the lower part of the cartilage of the Eustachian tube, [1] and inserts into the palatopharyngeus muscle by blending with its posterior fasciculus. It is innervated by vagus nerve (cranial nerve X) via the pharyngeal plexus. It raises the pharynx and larynx during deglutition (swallowing) and laterally draws the pharyngeal walls up.
Using 30 degrees endoscope to look into the bony Eustachian tube on a right ear. * indicates opening of the cartilaginous tube. ca: carotid artery. ttm: Tensor Tympani Muscle. prs: Protympanic spine. sbtr: Subtubal Recess. The Eustachian tube plays the primary role in the pathophysiology of disorders of the middle ear. Access to the proximal ...