. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 908 THE SENSORY APPARATUSES. tective layer enveloping the digital extremities, and constituting the claws of Carnivora, the Pig, Ox, Sheep, and Goat, and the hoofs of the Hoi-se, Ass, and Mule. These latter productions, ranking as they do among the most important oro-ans of the locomotory apparatus of Solipeds, will first receive notice. 1. The Hoof of Solipeds. The hoof of Solipeds is an extremely important study, because of the numerous diseases which affect this region. Consequently, it has been the Bubject o
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. 908 THE SENSORY APPARATUSES. tective layer enveloping the digital extremities, and constituting the claws of Carnivora, the Pig, Ox, Sheep, and Goat, and the hoofs of the Hoi-se, Ass, and Mule. These latter productions, ranking as they do among the most important oro-ans of the locomotory apparatus of Solipeds, will first receive notice. 1. The Hoof of Solipeds. The hoof of Solipeds is an extremely important study, because of the numerous diseases which affect this region. Consequently, it has been the Bubject of several voluminous works, to which the student must be referred for a more complete description of F'g- 490. its organization ; ^ as we cannot do more here than give some essentially descriptive details, necessary to till up the outline that we have traced out. We will at first glance at the parts contained in the hoof, returning after- wards to a description of the horny case itself. a. The Pabts contained in the Hoof. â Proceeding from within to with- out, we find, in the interior of ths horny box : 1. The third phalanx, navicular bone, and lower part of the second phrJanx, forming the articulation of the foot. 2. The four ligaments that bind this articulation, 3. The tendon of the common ex- tensor of the phalanges which covers the articulation in front, and that of the perforans which supports it be- hind, in becoming inserted into the pedal bone, after gliding over the posterior surface of the navicular bone. 4. The complementary ap- paratus of the third phalanx. LONGITUDINAL MEDIAN SECTION OF THE FOOT. 1, Anterior extensor of tlie phalanges, or extensor pedis; 2, literal extensor, or extensor suffraginis; 3, capsule of metacarpo-phalangeal articulation; 4, large metacarpal bone; .5, superficial Hcxor of the phalanges, or perforatu'^; 6, deep flexor, or perforans; 7, sheath; 8, bursa; 9, sesamoid bone; 10, ergot and fatty cushion of fetlock ; 11, crucial ligament; 1
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