Anatomical and histological aspects of the tonsils in sheep

[en] Since the 1st April 2002, the European Union has extended the Transmissible Spongiform Encephalopathy testing in ruminants by including sheep and goats in the survey studies. In small ruminants, presence of the agent of Bovine Spongiform Encephalopathy was demonstrated in tonsils, so these are considered as specified risk materials. This article gives an overview of the anatomical localisation and histological structure of the tonsils in small ruminants. Anatomically, 6 different tonsils can be distinguished: 3 are located in the oropharyngeal tract (tonsilla palatina, tonsilla lingualis, tonsilla veli palatini), 2 in the nasopharyngeal tract (tonsilla pharyngea and tonsilla tubaria), and one in the laryngopharyngeal tract (tonsilla paraepiglottica). Several tonsils show a cryptic overlying epithelium (cryptic tonsil) whereas other don't (non-cryptic tonsil). Several immunological features of the tonsils are described.

Disciplines :

Veterinary medicine & animal health

Author, co-author :

Gabriel, Annick ; Université de Liège - ULiège > Département de morphologie et pathologie > Anatomie des animaux domestiques

Cocquyt, G.

Van den Broeck, W.

Language :

French

Title :

Anatomical and histological aspects of the tonsils in sheep

Publication date :

2003

Journal title :

Annales de Médecine Vétérinaire

ISSN :

0003-4118

eISSN :

1781-3875

Publisher :

Annales Medecine Veterinaire, Liege, Belgium

Volume :

147

Issue :

4, AUG-SEP

Pages :

251-258

Available on ORBi :

since 18 May 2012

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