236 



KITCHEL!. 



The chorda tympani nerve in cattle has quite different relationships. 

 The course of the nerve is often aberrant. It may join the lingual distal to 



DOG 



Fig. 1. Gross dissection left mandibular and left lingual nerves in the dog. 

 Most of the mandible has been removed to permit illustration of the branches of 

 the mandibular nerve (N. mandibularis PNA), (Engebretsen and Kitchell, un- 

 published). 



Legend Figs. 1-4 

 1, Chorda tympani n. 2, Lingual n. 3, Branch to isthmus faucium. 4, Para- 

 sympathetic innervation of the submandibular salivary gland. 5, Sublingual n. 

 6, Lingual n. before dividing into lingual branches. 7, Branch to sublingual 

 salivary gland. 8, Mandibular n. 9, Pterygoid nn. 10, Buccal n. 11, Common 

 masseter and deep temporal n. 12, Auriculotemporal n. 13, Mandibulo- 

 alveolar n. 14, Mylohyoid n. a. Styloglossus m. b, Hyoglossus m. c, Genio- 

 glossus m. d, Geniohyoideus m. e, Mylohyoideus m. f, Stylohyoideus m. 

 g. Medial pterygoid m. h. Lateral pterygoid m. i. Temporal m. j, Diagastric m. 

 k, Masseter m. m. Cut edge mucous membrane of the tongue, n. Vallate 

 papillae, o. Sublingual salivary gland, p. Submandibular salivary gland, p' 

 Submandibular salivary duct, q. Diverticulum auditory tube, t, and t' Cut 

 edge of mucuous membrane along the mandible. 



the rostral border of the medial pterygoid muscle. In these instances it 

 may lie medial to the medial pterygoid muscle and may be four or more 



