| air cells of auditory tube | Occasional small air cells in the inferior wall of the auditory tube, near the tympanic orifice, communicating with the tympanic cavity. Synonym: cellulae pneumaticae tubae auditivae, air cells of auditory tube. (05 Mar 2000) |
|---|---|
| auditory tube | 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". Synonym: tuba auditiva, tuba auditoria, eustachian tube, guttural duct, otopharyngeal tube, otosalpinx, pharyngotympanic tube, salpinx, tuba acustica, tuba eustachiana, tuba eustachii. (05 Mar 2000) |
| bony part of auditory tube | The portion of the auditory tube that passes from the tympanic cavity anteromedially through the saemicanal for auditory tube. Synonym: pars ossea tubae auditivae. (05 Mar 2000) |
| cartilage of auditory tube | Cartilage of auditory tube or of pharyngotympanic tube; tubal cartilage; the trough-shaped cartilage that forms the medial wall, roof, and part of the lateral wall of the auditory tube. Synonym: cartilago tubae auditivae, cartilage of pharyngotympanic tube, tubal cartilage. (05 Mar 2000) |
| cartilaginous part of auditory tube | That portion of the auditory tube that is supported by cartilage; it continues anteromedially from the osseous part to open into the nasopharynx. Synonym: pars cartilaginea tubae auditivae. (05 Mar 2000) |
| glands of auditory tube | Glands located principally near the pharyngeal end of the auditory tube. Synonym: glandulae tubariae, glands of auditory tube, glands of eustachian tube. (05 Mar 2000) |
| medial lamina of cartilaginous auditory tube | The broad medial portion of the cartilaginous part of the auditory tube. Synonym: lamina medialis cartilaginis tubae auditivae, lamina cartilaginis medialis tubae auditivae, medial cartilaginous layer, medial layer of cartilaginous auditory tube. (05 Mar 2000) |
| medial layer of cartilaginous auditory tube | The broad medial portion of the cartilaginous part of the auditory tube. Synonym: lamina medialis cartilaginis tubae auditivae, lamina cartilaginis medialis tubae auditivae, medial cartilaginous layer, medial layer of cartilaginous auditory tube. (05 Mar 2000) |
| membranous lamina of cartilaginous auditory tube | The connective tissue membrane that, with the lateral lamina, completes the lateral and inferior walls of the cartilaginous part of the auditory tube. Synonym: lamina membranacea cartilaginis tubae auditivae, membranous layer. (05 Mar 2000) |
| groove for auditory tube | A furrow on the inner surface of the posterior border of the greater wing of the sphenoid bone, for the cartilaginous auditory tube. Synonym: sulcus tubae auditivae, pharyngotympanic groove. (05 Mar 2000) |
| pharyngeal opening of auditory tube | An opening in the upper part of the nasopharynx about 1.2 cm behind the posterior extremity of the inferior concha on each side. Synonym: ostium pharyngeum tubae auditivae, pharyngeal opening of eustachian tube. (05 Mar 2000) |
| mucosa of auditory tube | The lining coat of the auditory tube. Synonym: tunica mucosa tubae auditivae. (05 Mar 2000) |
| mucous glands of auditory tube | Glands located principally near the pharyngeal end of the auditory tube. Synonym: glandulae tubariae, glands of auditory tube, glands of eustachian tube. (05 Mar 2000) |
| saemicanal of auditory tube | The inferior division of the musculotubal canal which forms the bony part of the auditory (eustachian) tube. Synonym: saemicanalis tubae auditivae. (05 Mar 2000) |
| septum of auditory tube | A very thin horizontal plate of bone forming two saemicanals, the upper, smaller, for the tensor tympani muscle, the lower, larger for the auditory tube; its termination in the middle ear is the processus cochleariformis. Synonym: septum canalis musculotubarii, septum of musculotubal canal, septum tubae. (05 Mar 2000) |