Biomaterial Database

Anatomy of the Eustachian Tube. 2016

Rudolf Leuwer

ENT-department, HELIOS Hospital Krefeld, Lutherplatz 40, Krefeld 47805, Germany. Electronic address: rudolf.leuwer@helios-kliniken.de.

The eustachian tube consists of 2 compartments: the Rüdinger's safety canal and the auxiliary gap. It is surrounded by a cartilaginous wall on the craniomedial side and a membranous wall on the inferolateral side. The eustachian tube cartilage is firmly attached to the skull base by the lateral and the medial suspensory ligaments, which are separated by the medial Ostmann fat pad. The function of the isometric tensor veli palatini muscle is modulated by hypomochlia, which have an influence on the muscular force vectors.

UI	MeSH Term	Description	Entries
D007537	Isometric Contraction	Muscular contractions characterized by increase in tension without change in length.	Contraction, Isometric,Contractions, Isometric,Isometric Contractions
D008022	Ligaments	Shiny, flexible bands of fibrous tissue connecting together articular extremities of bones. They are pliant, tough, and inextensile.	Interosseal Ligament,Interosseous Ligament,Interosseal Ligaments,Interosseous Ligaments,Ligament,Ligament, Interosseal,Ligament, Interosseous
D008410	Masticatory Muscles	Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)	Masticatory Muscle,Muscle, Masticatory,Muscles, Masticatory
D010156	Palatal Muscles	The muscles of the palate are the glossopalatine, palatoglossus, levator palati(ni), musculus uvulae, palatopharyngeus, and tensor palati(ni).	Muscle, Palatal,Muscles, Palatal,Palatal Muscle
D010609	Pharyngeal Muscles	The muscles of the PHARYNX are voluntary muscles arranged in two layers. The external circular layer consists of three constrictors (superior, middle, and inferior). The internal longitudinal layer consists of the palatopharyngeus, the salpingopharyngeus, and the stylopharyngeus. During swallowing, the outer layer constricts the pharyngeal wall and the inner layer elevates pharynx and LARYNX.	Palatopharyngeus,Muscles of Pharynx,Palatopharyngeal Muscle,Salpingopharyngeus,Stylopharyngeus,Velopharyngeal Muscle,Muscle, Palatopharyngeal,Muscle, Pharyngeal,Muscle, Velopharyngeal,Muscles, Pharyngeal,Pharyngeal Muscle,Pharynx Muscle,Pharynx Muscles
D002356	Cartilage	A non-vascular form of connective tissue composed of CHONDROCYTES embedded in a matrix that includes CHONDROITIN SULFATE and various types of FIBRILLAR COLLAGEN. There are three major types: HYALINE CARTILAGE; FIBROCARTILAGE; and ELASTIC CARTILAGE.	Cartilages
D005064	Eustachian Tube	A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY.	Auditory Tube,Pharyngotympanic Tube,Auditory Tubes,Eustachian Tubes,Pharyngotympanic Tubes,Tube, Auditory,Tube, Eustachian,Tube, Pharyngotympanic,Tubes, Auditory,Tubes, Eustachian,Tubes, Pharyngotympanic
D005205	Fascia	Layers of connective tissue of variable thickness. The superficial fascia is found immediately below the skin; the deep fascia invests MUSCLES, nerves, and other organs.
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man