The cat - an introduction to the study of backboned animals, especially mammals (1881) (20577721942)

Title: The cat : an introduction to the study of backboned animals, especially mammals

Identifier: catintroduction00miva (find matches)

Year: 1881 (1880s)

Authors: Mivart, St. George Jackson, 1827-1900

Subjects: Cats; Anatomy, Comparative

Publisher: New York : Scribner's

Contributing Library: The Library of Congress

Digitizing Sponsor: The Library of Congress

Text Appearing Before Image:

170 THE CAT (CHAP. VI. § 8. The cat's mouth is bounded externally by tbe lips, which form a single fold around the lower jaw, and two folds, separated by a median notch, around the upper jaw. Inside the lips, folds of membrane called frama, proceed inwards, and bind them to the gums, which are masses of dense fibrous tissue investing the alveolar margins of the jaw-bones and covered by mucous membrane of a smooth and highly vascular character. Laterally, the mouth is bounded by the cheeks; it is bounded below by the tongue and the soft parts which connect the tongue with the mandible. Above, it is bounded by the palate within the upper alveolar margin. The lips and cheeks are composed of muscles and skin (as already described), together with blood-vessels, nerves, and * fat. The mucous lining of the mouth abounds in small glands, of which those inside the lips are called "labial" and those inside the cheeks " buccal." On the palate, the mucous membrane, where it invests the bones, is raised into about eight (Fig. 86) curved, transverse, permanent ridges or rugce. Beyond the bones, the palate is continued for a long distance as " the soft palate " (investing the muscles already noted), and which hangs down from the hinder edge of the palatine bones like a curtain, and is therefore called the velum palati. The palate abounds in small " palatine glands." The middle part of the free edge of the velum presents a slightly marked notch. Two folds of membrane descend, diverging as they descend, from either end of the velum (see Fig. 87, p, and in front of t). These folds form what is called the anterior and posterior " pillars of the fauces/' or the isthmus faucium. The term " fauces " is used to denote that posterior aperture of the mouth which is bounded laterally by these pillars, above by the velum, and below by a structure rising up behind the tongue, and hereafter to be described as the " epiglottis." Between the anterior and posterior pillar of the fauces on each side is a large horizontally-placed crescentic depression (with numer- ous openings of follicles * scattered over its floor), called a tonsil (Fig. 87, t). The use of the tonsils is unknown. * A "follicle " is a minute simple bag-shaped gland.

Text Appearing After Image:

Fig 86.—Palate. ap. Anterior palatine foramen. In this view the small upper molar is we1! seen, as also the inner tubercle of the sectorial tooth

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1881

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