2. The submaxillary gland (glandula submaxillaris) ([Fig. 65], 2, [page 109], and [Fig. 131], 11) is approximately kidney-shaped. Its surface is nearly smooth, the lobulations not being apparent externally. It lies ventrad of the parotid, at the caudal edge of the masseter muscle, just caudad of the angular process of the mandible. The posterior facial vein ([Fig. 131], b) crosses its outer surface, and its cranioventral border is hidden by two lymphatic glands ([Fig. 131], 12) lying at the sides of the anterior facial vein. The submaxillary duct (ductus submaxillaris, frequently called Wharton’s duct) leaves the inner surface of the gland and passes beneath the digastric and mylohyoid muscles and against the outer surface of the styloglossus. From the point where the styloglossus passes into the tongue the duct continues craniad close against the oral mucosa and parallel to the mandibula. It is accompanied by the duct of the sublingual, which lies at first dorsad of it and then mediad. It opens at the apex of the prominent papilla which lies at the side of the middle line at the cranial end of the floor of the mouth.
3. The sublingual gland is elongated and conical in form, with its base against the submaxillary, of which it appears to be a continuation. It stretches along the submaxillary duct for about one and one-half centimeters, lying between the masseter and digastric muscles. The sublingual duct leaves its ventral side, passes close to the submaxillary duct, at first dorsad and then mediad of it, and opens on the medial side of the apex of the same papilla with the submaxillary duct.
4. The molar gland (glandula molaris) ([Fig. 65], 9) lies between the orbicularis oris and the mucosa of the lower lip. It stretches from the cranial border of the masseter to a point between the first premolar and the canine. It is flat, broad caudad, and ends in a point craniad. It has several ducts which pass straight through the cheek and open on the mucous surface of the mouth.
5. The infraorbital (or orbital) gland lies in the lateral part of the orbit on its ventral floor. It is ovoid and about one and one-half centimeters long and one-third as thick. Its ventral end rests against the mucosa of the mouth just caudad of the molar tooth. Its duct leaves the ventral end and opens into the mouth at a point about three millimeters caudad of the molar tooth.
The Teeth. Dentes.
—The adult cat has thirty teeth, fourteen in the lower jaw and sixteen in the upper jaw. There are twelve incisors, four canines, ten premolars, and four molars. The tooth formula for the cat is then
i3 — 33 — 3, c1 — 11 — 1, pm3 — 32 — 2, m1 — 11 — 1.
The teeth are implanted in the alveolar borders of the premaxillaries, maxillaries, and mandible. In each tooth can be distinguished the root, imbedded in the socket of the bone, the crown, which projects above the gums, and a narrow neck connecting the two. The root is composed of one or more separate fangs; the crown bears one or more points or cusps.
At the cranial end of each jaw are six incisor teeth ([Figs. 93] and [94], a). These are imbedded in the alveolar borders of the premaxillaries and the mandible. The incisor teeth are small, with a crown bearing a sharp edge which is notched so as to form three minute cusps. The root of each has a single fang. The lateral incisors are the largest in each jaw, and those of the upper jaw are larger than those of the lower.
