pharyngotympanic (auditory) tube

(redirected from guttural duct)

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."

pha·ryn·go·tym·pan·ic (aud·i·tor·y) tube

(fă-ring'gō-tim-pan'ik aw'di-tōr-ē tūb) [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."
Synonym(s): salpinx (2) [TA] , tuba auditiva [TA] , auditory tube, eustachian tube, tuba auditoria.

pha·ryn·go·tym·pan·ic (aud·i·tor·y) tube

(fă-ring'gō-tim-pan'ik aw'di-tōr-ē tūb) [TA]
A tube leading from the tympanic cavity to the nasopharynx.
Synonym(s): auditory tube.