. The anatomy of the domestic animals. Veterinary anatomy. FLEXOR DIVISION 315 and nen^e; deeply, to the humeral head of the deep flexor. The tendon is re- lated superficially to the skin and fascia; deeplj', to the deep flexor tendon. Blood-supply.—^ledian artery. Xerve-supply.—Ulnar and median nerves. 5. Deep digital flexor^ (^I. flexor digitalis profundus).—The fleshy part of this muscle lies on the posterior surface of the radius, and is almost entirely under cover of the preceding nmscles. It is the largest muscle of the flexor group. Origin.—(1) The medial epicondyle of the humerus; (2)
. The anatomy of the domestic animals. Veterinary anatomy. FLEXOR DIVISION 315 and nen^e; deeply, to the humeral head of the deep flexor. The tendon is re- lated superficially to the skin and fascia; deeplj', to the deep flexor tendon. Blood-supply.—^ledian artery. Xerve-supply.—Ulnar and median nerves. 5. Deep digital flexor^ (^I. flexor digitalis profundus).—The fleshy part of this muscle lies on the posterior surface of the radius, and is almost entirely under cover of the preceding nmscles. It is the largest muscle of the flexor group. Origin.—(1) The medial epicondyle of the humerus; (2) the medial surface of the olecranon; (3) the midtlle of the posterior svirface of the radius and a small ad- jacent area of the ulna. Insertion.—The semilunar crest and the adjacent surface of the cartilage of the tliird phalanx. Action.—To flex the digit and carpus and to extend the elbow. Structure.—This muscle consists of three heads. The humeral head (Caput humerale) constitutes the bulk of the muscle. It is marked by tendinous inter- sections, and is separable into three secondary heads. A synovial pouch from the elbow joint descends untler its origin alDout two inches. The Tendon of Tendon of ulnar head (Caput ulnare) is lateral extensor common extensor much smaller, antl is at first \ superficially situated between the lateral and middle flexors of the carpus. The radial head (Caput radiale) is the smallest, and is not always present; it is situated on the distal two- thirds of the posterior surface of the radius, under the humer- al head. Each of these heads is pro\nded vdth a tendon. The principal tendon—that of the humeral head—begins about three or four inches (8-10 cm.) above the carpus and is joined at the carpus bj' the tendons of the other two heads. The conjoined tendon passes downward tlu-ough the carpal canal, being included in the carpal synovial sheath mth the superficial flexor ten- don, as preNnously described. The tendon is at first broa
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
