VM8054 Veterinary Histology

Bird Tongue

Author: Dr. Thomas Caceci
The surface of the avian tongue, as in mammals, is covered by keratinized stratified squamous epithelium. There are no sensory papillae to correspond to the vallate, fungiform, and foliate papillae of mammals, but a large filiform papilla is present in this field.

One of the lingual salivary glands is also present, and glands of identical appearance are found embedded in the walls of the oral cavity. Birds do have need of some lubrication of their food in swallowing, though not perhaps as much as mammals do.

Avian tongue, decalcified; H&E stain, paraffin section, 20x

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