. The anatomy of the domestic animals. Veterinary anatomy. Fig. —Muscles of Antibra- CHIU.\I AND Mands OF Ox; Lateral View. a, Extensor carpi radialia: 6, extensor digiti tertii; c, extensor digitalis communis; d, extensor digiti quarti; e, ulnaris lateralis; /. extensor carpi obliquus; /', ul- nar head of flexor carpi ulnaris; o, brachialis; h, interosseus medius or suspensory ligament; i, flexor tendons; i', branch of h, to super- ficial fiexor tendon; 8, olecranon; 11, accessory carpal bone; 13', metacarpal tuberosity. (After Ellenberger-Baum, Anat. fiir Kiinstler.). Fig. 306.—
. The anatomy of the domestic animals. Veterinary anatomy. Fig. —Muscles of Antibra- CHIU.\I AND Mands OF Ox; Lateral View. a, Extensor carpi radialia: 6, extensor digiti tertii; c, extensor digitalis communis; d, extensor digiti quarti; e, ulnaris lateralis; /. extensor carpi obliquus; /', ul- nar head of flexor carpi ulnaris; o, brachialis; h, interosseus medius or suspensory ligament; i, flexor tendons; i', branch of h, to super- ficial fiexor tendon; 8, olecranon; 11, accessory carpal bone; 13', metacarpal tuberosity. (After Ellenberger-Baum, Anat. fiir Kiinstler.). Fig. 306.— of Anti- BRACHIUM AND MaNUS OF Ox; Medial View. a, Extensor carpi radialis; b, tendon of extensor digiti ter- tii; /, tendon of extensor carpi obliquus; p, brachialis; A, inter- osseus medius or suspensory ligament: i, flexor tendons; i', branch of/(,? k, flexor carpi radi- alis; /, flexor carpi ulnaris; m, superficial digital flexor. (After Ellenberger-Baum, Anat. fiir Kiinstler.) The extensor carpi obliquus resembles that of IV. MUSCLES OF THE FOREARM AND MANUS A. Extensor Division The extensor carpi radialis is like that of the horse. There is sometimes a small muscle lying along its medial border, which may represent the exten-' sores pollicis. There are three digital ex- tensors: 1. The common digital extensor (M. extensor digitalis communis) arises by two heads from the lateral epicondyle of the humerus and from the ulna. The heads fuse about the middle of the forearm, and terminate soon on a tendon which passes over the carpus and metacarpus, gradually inclining forward. At the fetlock joint it divides into two branches, each of which is inserted into the extensor pro- cess of the corresponding third phalanx. 2. The medial digital extensor (M. extensor digiti ter- tii proprius) arises on the lateral epicondyle, and is inserted by two branches into the second and third phalanges of the me- dial digit. The tendon receives two reinforcing slips from the suspensory liga
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