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Macroscopic and light microscopic structure of fungiform papillae on the tongue of squirrels (sciurus vulgaris)
(KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2010) Unsaldi, Esin
This study was carried out to examine macroscopic and light microscopic structure of papillae fungiformes in squirrels. In this study, 10 tree squirrels (5 female and 5 male) were used. Macroscopically, squirrel tongue was relatively long and narrow. The tongue was about 2.77 cm in lenght and 0.75 cm in wide. There were two types of taste papillae in squirrel tongue. These were papillae fungiformes and papillae vallatae. In addition to, mucosa crimps that consist of 12 laminae on each posterolateral edge were determined macroscopically in foliata area. However, there was no finding about foliatae papillae at the light microscopic observations. It was observed that fungiform papillae were distributed among the filiform papillae, being fungus-shaped protuberances on the surface of the tongue. The number of fungiform papillae was reported to be 310 on anterior part of the tongue. On the posterior part, 53 fungiform papillae were observed. Papillae fungiformes were covered with a strafied squamous epithelium and there were keratine lamellae on the outer of it. An intraepitelial taste bud (Caliculus gustatorius) was located in the middle of the top of the papillae and this taste bud was connected to mouth cavity with a taste pore. Same findings were obtained in female and male squirrels.