tubal tonsil(redirected from eustachian tonsil)
a collection of lymphoid nodules near the pharyngeal opening of the auditory tube.
Lymphoid tissue located in the mucous membrane of the tube connecting the middle ear to the nasopharynx.
See also: tonsil
Eustachio,Bartolommeo E., Italian anatomist, 1524-1574.
eustachian catheter - a catheter used for catheterization of the middle ear through the eustachian tube.
eustachian cushion - a ridge in the nasopharyngeal wall posterior to the opening of the eustachian tube. Synonym(s): torus tubarius
eustachian tonsil - a collection of lymphoid nodules near the pharyngeal opening of the auditory tube. Synonym(s): tubal tonsil
eustachian tube - a tube leading from the tympanic cavity to the nasopharynx. Synonym(s): auditory tube; tuba eustachiana; tuba eustachii
eustachian tuber - a slight projection from the labyrinthine wall of the middle ear below the fenestra vestibuli (ovalis).
eustachian valve - an endocardial fold extending from the anterior inferior margin of the inferior vena cava to the anterior part of the limbus fossa ovalis. Synonym(s): valve of inferior vena cava
tuba eustachiana - Synonym(s): eustachian tube
tuba eustachii - Synonym(s): eustachian tube
Gerlach,Joseph, German anatomist, 1820-1896.
Gerlach anular tendon - the thickened portion of the circumference of the tympanic membrane that is fixed in the tympanic sulcus. Synonym(s): fibrocartilaginous ring of tympanic membrane
Gerlach tonsil - a collection of lymphoid nodules near the pharyngeal opening of the auditory tube. Synonym(s): tubal tonsil
Gerlach valve - a fold of mucous membrane, simulating a valve, sometimes found at the origin of the vermiform appendix. Synonym(s): valve of vermiform appendix; valvula processus vermiformis
Gerlach valvula - the network of fibers at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera. Synonym(s): trabecular reticulum
1. a small mass of lymphoid tissue, especially that found in close association with the mucous membrane of the throat; generally used alone to designate the palatine tonsil. Other structures referred to as tonsils are the cecal, lingual, esophageal, paraepiglottic, pharyngeal and tubal lymphoid aggregations.
2. a small mass of tissue.
the accumulated mass of lymphoid tissue in the wall of cecum especially the proximal segment of the avian cecum.
a rounded mass forming part of the cerebellum on its inferior surface.
large volume of lymphoid tissue in the caudal segment of the duck's esophagus.
a tonsil bearing numerous invaginations of its surface epithelium (fossulae) each surrounded by lymphoid tissue to form a follicle, as in the palatine tonsils of cattle or the lingual tonsils of the horse.
diffuse collection of lymphoid tissue near the tongue root of most mammals.
see palatine tonsil.
a collection of lymphoid tissue craniolateral to the epiglottic base.
a collection of lymphoid tissue in the roof of the nasopharynx in pigs.
soft palate tonsil
lymphoid tissue within the soft palate; principal tonsils in pigs in which it forms twin smooth patches of mucosa.
the lymphoid tissue clustered close to the pharyngeal orifice of the auditory tube.