[SEM studies on the connective tissue cores of the lingual papillae of the northern goshawk (Accipiter gentilis)].

The lingual papillae and their connective tissue cores (CTCs) of the northern goshawk were examined by scanning electron microscopy (SEM). The length of the tongue was approximately 2.5 cm. The median groove divided the body of the tongue into symmetrical parts. At a point approximately 2/3 of the length, there were large conical papillae between the body and the root of the tongue, the apices of which were pointed towards the posterior part of the tongue. Under the light microscopy, the filiform papillae of the dorsal surface in the lingual body showed the desquamate cells of non-keratinized epithelium. There were openings of the lingual glands on the anterior part and root of the tongue. The lingual papillae and their CTCs of the northern goshawk had a structure similar to those of the white tailed eagle and black kite.