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Slide 32
Rabbit tongue has many more taste buds than human tongue; they are very easy to find within the surface epithelium on this specimen (on the sides of the clefts between the papillae).
Rabbit is lined by "foliate papillae", which are like long ridges ("foliate" means "leafy", in this case rather like the "leaves" of a book), so in section across the ridges each papilla is shaped just like its neighbors.
This specimen displays a variety of other tissue features, including stratified squamous epithelium (on surface), cuboidal epithelium (lining ducts), glandular epithelium (scattered amidst muscle), connective tissue (beneath the epithelium, to be distinguished from deeper skeletal muscle), skeletal muscle.
Specimens in Slide Boxes 1, 4, 6, 7, 8, 9 include both serous and mucous salivary glands. In Boxes 2, 3, 5 only serous secretory tissue is visible.
A conspicuous peripheral nerve may be found in the specimen from Slide Boxes 1, 2, 3, 5 (in other boxes, nerves may also be found but are less apparent).
For more, see tongue.
Comments and questions: dgking@siu.edu
Department of Zoology e-mail: zoology@zoology.siu.edu
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SIUC / College of Science / Zoology / David King / ZOOL 409