. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MOUTH. 333 maxilla above the angle of the jaw, and from the crown of the last molar tooth, so as to pass between the curtain of the'soft palate on the one part, ami the base of the tongue on the other, leaving the latter organ adlierent to the lower jaw. TliLs last should be removed from tl<e upi)cr jaw hy cutting through the masseter and alveolo-labial muscles, and so exposing the liard and solt palates in such a manner as to render easy the special dissections Fig. 148. necessary for their study. Tliese dissect
. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MOUTH. 333 maxilla above the angle of the jaw, and from the crown of the last molar tooth, so as to pass between the curtain of the'soft palate on the one part, ami the base of the tongue on the other, leaving the latter organ adlierent to the lower jaw. TliLs last should be removed from tl<e upi)cr jaw hy cutting through the masseter and alveolo-labial muscles, and so exposing the liard and solt palates in such a manner as to render easy the special dissections Fig. 148. necessary for their study. Tliese dissections are limited to the removal of the mucous layer covering the deep venous network, and to the partial excision of this, which allows the artt-ry and palatine nerves to be seen. (See figure 148.) The palate (Jiard jmlafe), palatine arch, or iqjper icall of the mouth, is circum- scribed, iu front aud cm the sides, by the superior dental arcade, aud limited, behind, by the anterior border of the soft palate. It is a parabolic surface, exactly repre- senting, in its configuration, the bony palate (Fig. 21). On its face is remarked a median groove, v^•hich partitions it into two equal divisions, aud which commences quite in front, at the base of a small tubercle. Curved transverse furrows, twenty in number (Leyh gives from sixteen to eighteen), divide each of these halves into an equal number of salient arches, whose concavities are turned backwards, and which become narrower and less marked as they are more posterior. (These arches and furrows aid in retain- ing the aliment which the tongue carries towards the palate during degh;tition). Structure.—The palatine lies on the bony vault formed by the palatine and supermaxillary bones. It includes in its structure: 1. A fibrous membrane, applied to the bone just mentioned, which sustains a re- markably-developed venous network con- stituting a veritable erectile tissue, and gives to the palate a gi-eater or less degree of thickn
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