Common myna tongue was studied histomorphologically and histochemically. Four tongues of adult birds were carried out macroscopically and microscopically. The tongue was triangular; the dorsum of the body had median groove. Two to three backward directed papillae were located on each side of the body-base junction. A single transverse row of pharyngeal papillae was located behind the laryngeal cleft. The parakeratinized mucosa covered the entire surface of the tongue except clearly keratinized band on the ventrolateral surface and the conical papillae. Compared with the lateral group (LG), the secretory cells of the medial group (MG) of the anterior lingual glands (ALG) and the posterior lingual glands (PLG) contained large amount of mucin. It was neutral mucin. However, the LG had weak acid mucin with carboxylated group. Meanwhile, the MG of the ALG and the PLG had strong acid mucin with both carboxylated and sulphated groups. In conclusion, the morphological observation of the common myna tongue showed some variation from the other birds. Histochemical results indicated the differences between the LG and MG of the anterior lingual glands. However, no difference was observed between the latter and the PLG.
The present work making histological studies of certain part of medullaoblongata on seven one humped camel ( Camelus Dromedarius ) of differentages and sexes. The location of Vagus X, accessory XI and hypoglossal XIInerve nuclei. The hypoglossal nerve XII nucleus consist of two nuclei dorsalgreater and ventral smaller and the dorsal nuclei observed. Connected withdorsal motor vagal nucleus X by specific arch of fiber in many sections andanother observation the root fiber of hypoglossal nucleus XII pass along thelateral border of inferior olivary nucleus and some sections the root fiberpenetrate lateral part of inferior olivary nucleus.
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