palatine tonsil

tonsil /ton·sil/ (ton´sil) a small, rounded mass of tissue, especially of lymphoid tissue; generally used alone to designate the palatine tonsil.

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tonsil of cerebellum  a rounded mass of tissue forming part of the caudal lobe of the hemisphere of the cerebellum.

faucial tonsil  palatine t.

lingual tonsil  an aggregation of lymph follicles at the root of the tongue.

Luschka's tonsil  pharyngeal t.

palatine tonsil  a small mass of lymphoid tissue between the pillars of the fauces on either side of the pharynx.

pharyngeal tonsil  the diffuse lymphoid tissue and follicles in the roof and posterior wall of the nasopharynx.

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palatine tonsil

n.

See tonsil.

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palatine tonsil,

one of a pair of almond-shaped masses of lymphoid tissue between the palatoglossal and palatopharyngeal arches on each side of the fauces. They are covered with mucous membrane and contain numerous lymph follicles and various crypts.

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tonsil (ton´sil),

n a rounded mass of tissue, usually of a lymphoid nature.

tonsil, lingual,

n a variable mass of lymphoid tissue at the base of the dorsal surface of the tongue.

tonsil, palatine,

n one of two small tissue masses on opposite sides of the oropharynx, between the faucial pillars, which are believed to serve as the first line of defense against bacteria that enters the oral cavity via the oral cavity.

tonsil, pharyngeal

n a mass of lymphoid tissue on the posterior wall of the nasopharynx; also known as the adenoids.

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palatine, palatal

pertaining to the palate. See also palate.

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palatine abscess

commonly diagnosed in companion birds. Are often accumulations of keratinized cellular debris as a result of a dietary deficiency of vitamin A.

palatine fissure

narrow gap beside the palatine process of the incisive bone; covered by the vomeronasal organ and pierced by the naso-incisive duct.

palatine process

medial and lateral palatine processes contribute to the development of the palate and the separation of the oral and nasal cavities.

palatine sinus

one of the paranasal sinuses connecting with the nasal cavity that is particularly large in ruminants.

palatine slit

the caudal half of the palate in birds is divided by a median choanal slit.

palatine tonsil

tonsils found on the ventrolateral border of the soft palate, which are large and housed in a tonsillar sinus in dogs and cats, are absent from the pig and are follicular in ruminants and the horse.

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tonsil

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.

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cecal tonsil

the accumulated mass of lymphoid tissue in the wall of cecum especially the proximal segment of the avian cecum.

cerebellar tonsil

a rounded mass forming part of the cerebellum on its inferior surface.

esophageal tonsil

large volume of lymphoid tissue in the caudal segment of the duck's esophagus.

follicular tonsil

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.

lingual tonsil

diffuse collection of lymphoid tissue near the tongue root of most mammals.

palatine tonsil

see palatine tonsil.

paraepiglottic tonsil

a collection of lymphoid tissue craniolateral to the epiglottic base.

pharyngeal tonsil

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.

tubal tonsil

the lymphoid tissue clustered close to the pharyngeal orifice of the auditory tube.