. The anatomy of the domestic animals . Veterinary anatomy. MUSCLES OF THE THORACIC LIMB 373 medial ligament of the elbow and under the ulnar tendon of the biceps and ends just proximal to the latter. The tendon of the biceps forms a partial sheath for that of the brachialis. The tensor fasciae antibrachii is thin and narrow. It arises on the tendon and lateral surlace of the latissimus dorsi, and ends on the olecranon and the fascia of the forearm. The triceps has an additional deep head (Caput accessorium), which arises just below the head of the humerus. The medial head is very long; it ari
. The anatomy of the domestic animals . Veterinary anatomy. MUSCLES OF THE THORACIC LIMB 373 medial ligament of the elbow and under the ulnar tendon of the biceps and ends just proximal to the latter. The tendon of the biceps forms a partial sheath for that of the brachialis. The tensor fasciae antibrachii is thin and narrow. It arises on the tendon and lateral surlace of the latissimus dorsi, and ends on the olecranon and the fascia of the forearm. The triceps has an additional deep head (Caput accessorium), which arises just below the head of the humerus. The medial head is very long; it arises from a mark on the proximal fourth of the medial surface of the humerus, just behind the insertion of the teres major and latissimus dorsi. A bursa lies on the olecranon in front of the common tendon of insertion. The brachioradialis is a long, narrow, delicate mus- cle, situated superficially on the dorsal surface of the forearm. It arises with the extensor carpi on the crest above the lateral epicondyle of the humerus, and is in- serted into the distal part of the medial border of the radius. It is often much reduced, and is sometimes ab- sent. It rotates the forearm and paw outward. The extensor carpi radialis arises on the lateral con- dyloid crest and divides into two parts. The larger lat- eral part, the extensor carpi radialis brevis, ends on the proximal end of the third metacarpal bone. The medial and more superficial part, the extensor carpi radialis longus, ends on the second metacarpal bone. (A ten- don to the fourth metacarpal may occur.) The extensor carpi obliquus or abductor poUicis longus arises from the lateral border and dorsal surface of the ulna, the interosseous ligament, and the proximal part of the lateral border of the radius. It is inserted into the first metacarpal bone by a tendon which con- tains a small sesamoid bone. It abducts the first digit. There are three (or four) extensors of the digits. 1. The common digital extensor (M. extensor digi-
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphiladelphialondon
