. The anatomy of the domestic animals . Veterinary anatomy. Fig. 65.—Proximal Extremity of Left Humerus of Horse; End ^"IEW. 1, Intertuberal (or bicipital) groove; 2, 3, anterior parts of lateral and medial tuberosities; 4, fossa; 5, 6, posterior parts of lateral and medial tuberosities; 7, Fig. 66.—Distal Extremity of Left Humerus of Horse; End \'ie\v. 1, Medial condyle; 2, lateral condyle; 3, part of medial epicondyle to which medial ligament is attached; 4, depression in which lateral Ugament is attached; 5, 6, areas of attachment of flexor and extensor muscles of carpus and dig
. The anatomy of the domestic animals . Veterinary anatomy. Fig. 65.—Proximal Extremity of Left Humerus of Horse; End ^"IEW. 1, Intertuberal (or bicipital) groove; 2, 3, anterior parts of lateral and medial tuberosities; 4, fossa; 5, 6, posterior parts of lateral and medial tuberosities; 7, Fig. 66.—Distal Extremity of Left Humerus of Horse; End \'ie\v. 1, Medial condyle; 2, lateral condyle; 3, part of medial epicondyle to which medial ligament is attached; 4, depression in which lateral Ugament is attached; 5, 6, areas of attachment of flexor and extensor muscles of carpus and digit; 7, olecranon fossa. Development.—The humerus ossifies from six centers, viz., three primary centers for the shaft and extremities, and three secondary centers for the lateral tuberosity, the deltoid tuberosity, and the medial condyle respectively. The proximal end fuses with the shaft at about three and one-half years, the distal at about one and a half years of age. THE RADIUS The radius is much the larger of the two bones of the forearm in the horse. It extends in a vertical direction from the elbow, where it articulates with the hum- erus, to the carpus. It is gently curved, the convexity being dorsal. It consists of a shaft and two extremities. The shaft (Corpus radii) is curved in its length, somewhat flattened from before backward, and widened at its ends. It presents for description two surfaces and two borders. The dorsal surface (Facies dorsalis) is smooth, slightly convex in its length, and rounded from side to side. The volar surface (Facies volaris). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sisson, Septimus, 1865-1924. Philadelphia ; London : W. B. Saunders Company
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