Oral Cavity, Tongue, Pharynx and Esophagus - PDF document

Oral Cavity, Tongue, Pharynx and Esophagus PLATE 51Right lateral view of a sagittal section of a dogÕs head.Dorsal view of the tongue and dissected laryngopharynx, trachea and esophagus. Dog Antatomy a Coloring Atlas repiratory tracts. Its three parts are: 1)extending caudad from the choanae (exitsfrom the nasal fossa on each side), 3) palate. The soft palateis elevated. Theroot of the tongue moves caudad and dorsadin a boltlike manner, pushing the partially over the . The (space between the vocal folds)in the larynx is narrowed. Pressure bypharyngeal muscles forces food or water intocarry food through to the stomach.movement of food or water.During breathing, the free edge of the softopen(See Plate 67). ithin the apex of the tongue, the rodlikeconsists of adipose tissue, skeletalmuscle and some cartilage. In olden times,the lyssa was thought to be the cause ofcure the disease. What a place for oneÕshands! Lyssa is also a synonym for rabies. allatefoliatefungiform papillae buds (taste) cells, supporting cells and nervemarginal papillaenot contain taste buds.Marginal papillae on a neonatal (newborn)puppyÕs tongue assist in suckling. As the dietchanges from milk to solid food, marginalpapillae regress until they no longer exist. Figure 1Figure 2Figure 3MarginalpapillaeThyroidglandLaryngopharynxEsophagusTracheaLaryngeal entranceEpiglottisMedian grooveFiliform papillaeApex oftongueFungiform papillaeConical papillaeLeft palatine tonsil (in tonsillar fossa)Foliate papillaeVallate papillaeLaryngopharynxEsophagusTracheaLarynxTongueEpiglottisSoft palateLyssaOral cavit y ood and water Base oftongue Digestive SystemPlate 51- Oral Cavity, Tongue, Pharynx and Esophagus