. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. 82 Anatomy of the Woodchuck, Marmota monax. Fig. 5-1. Sagital section of the head, medial view. 1 hard palate, 2 soft palate, 3 esophagus, 4 palatine tonsil, 5 man- dibular salivary gland, 6 tongue, 7 mandibular symphysis, 8 lower incisor tooth, 9 upper incisor tooth, 10 incisive papilla. the tongue. Fungiform papillae carry taste buds. The vallate papillae, papillae valatae, are the most prominent of the lingual papillae. They measure approximately 6 mm in diameter and consist of a central, raised part, surrounded by a moat. Ther
. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. 82 Anatomy of the Woodchuck, Marmota monax. Fig. 5-1. Sagital section of the head, medial view. 1 hard palate, 2 soft palate, 3 esophagus, 4 palatine tonsil, 5 man- dibular salivary gland, 6 tongue, 7 mandibular symphysis, 8 lower incisor tooth, 9 upper incisor tooth, 10 incisive papilla. the tongue. Fungiform papillae carry taste buds. The vallate papillae, papillae valatae, are the most prominent of the lingual papillae. They measure approximately 6 mm in diameter and consist of a central, raised part, surrounded by a moat. There are 3 to 5 vallate papillae on the caudal third of the dorsum of the tongue. They mark the boundary between the body and root of the tongue. Vallate papillae carry taste buds. There are two groups of foliate papillae, papillae foliatae. Each group is 8 to 10 mm long and contains 14 to 18 leaf-like papillae. They are located on the lateral margin of the tongue, immediately rostral to the palatoglossal fold. Foliate papillae carry taste buds. Blood supply: The lingual artery. The veins of the tongue are satellites of the arteries. Innervation: The tongue is innervated by the chorda tympani and the lingual, glossopharyngeal and hypoglossal nerves. The lingual nerve is the principal sensory nerve to the tongue. It innervates the tongue rostral to the vallate papillae. The lingual branch of the glos- sopharyngeal nerve supplies sensory fibers to the root of the tongue. It also innervates the taste buds on the vallate and foliate papillae. The chorda tym- pani innervates the taste buds rostral to the vallate papillae. The hypoglossal nerve innervates the mus- cles of the tongue. Lymph drainage: By the retropharyngeal lymph nodes. The gums, gingiva, are composed of dense fi- brous connective tissue covered by a smooth mu- cosa. The connective tissue extends around the necks of the teeth and down into the alveoli. It is continuous with the alveolar periosteum. The gums are externally
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