. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. THE rUARYNX. 441 Fig. 249. There are also labial, stapliyline, and liDgiial glands; with, besides, near the frsBOum, a small conglomerate gland—the gland of Nnhn—which has a special duct. The Pharynx (Figs. 249, 250, 251). Preparation.—1. Study the general and situation of this vestibule in the antero-posterior vertical section of the head (Fig. 250). 2. In order to examine the interior conveniently, the head should be separated from the neck, leaving attached to it a certain jiorfioii of the trach
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. THE rUARYNX. 441 Fig. 249. There are also labial, stapliyline, and liDgiial glands; with, besides, near the frsBOum, a small conglomerate gland—the gland of Nnhn—which has a special duct. The Pharynx (Figs. 249, 250, 251). Preparation.—1. Study the general and situation of this vestibule in the antero-posterior vertical section of the head (Fig. 250). 2. In order to examine the interior conveniently, the head should be separated from the neck, leaving attached to it a certain jiorfioii of the trachea and oesophagus; then hy sawing across—either through or beldud the teuiporo-maxillary artictdations—all that portion of the cranium is removed, and the posterior piirieti'S of the pharynx is expostd, and may be ^sected to stufly the ;oli s (Fig. -51), or opened in the middle line to reach the interior of the cavitv (Fig. 249). 3. The muscles should be dissrcteil with those of the tongue, and in the same manner. The is a uienibranous vestibule common to the digestive and air passages, and situated behind the soft palate, which separates it from the mouth; above, it is attached to the base of the cranium, and, be- low, to the laryngeal apparatus. Form ami internal disposition.—In conse- quence of the conformation of the soft palate, which, in the domesticated animals, and par- ticularly in Solipeds, is prolonged to the base of the epiglottis, the pharynx forms a cyliudro- conical cavity, elongated from before to behind, enclosed laterally and posteriorly by wide thin muscles, and with the soft palate for an anterior wall. Between the two Eustachian tubes, under the base of the cranium, the pharyngeal cavity presents a triangular diverticulum, the walls of which are only mucous membrane. This diverti- culum is much deeper in the Ass than in the Horse.^ At the two extremities of this cavity are openings which allow the pharynx to com- municate
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Keywords: ., bookauthorcha, bookcentury1900, bookdecade1900, booksubjecthorses
