MYOLOGY 169 



triceps fills the whole interior of the angle formed by the arm 

 and the shoulder. We then shall have an idea of what the 

 triceps is in quadrupeds. It is necessary to add that the 

 general resemblance would be still more complete if the arm 

 were firmly supported by the side of the thorax, because in 

 quadrupeds it occupies an analogous position, determined 

 by the arrangement of the muscles which, proceeding from 

 the trunk and neck, are attached to it. 



Anterior Region 



Biceps Cubiti (Fig. 68, 21 ; Fig. 72, 10, 11). — 

 This muscle, also called the long flexor of the forearm, does 

 not merit the name except by its analogy with the corre- 

 sponding muscle in man. Indeed, in the domestic animals 

 it is not divided into two parts ; it is represented by a 

 single fasciculus, long and fusiform, situated on the front of 

 the humerus, and directed obliquely downwards and back- 

 wards, as the latter, on its part, is also inclined. 



It arises above from a tubercle at the base of the coracoid 

 process, which surmounts the glenoid cavity of the scapula. 

 Its tendon, which is highly developed in the solipeds, occu- 

 pies the bicipital groove. We remember that in these latter 

 the groove in question is divided into two channels by a 

 median prominence. 



The tendon in which the muscle ends is inserted into a 

 tuberosity, situated on the internal surface of the superior 

 extremity of the radius — the bicipital tuberosity. In the pig, 

 the cat, and the dog, there is detached from the tendon to 

 which we have just referred a fasciculus of the same nature, 

 which, after having wound round the radius, is inserted into 

 the internal surface of the ulna, towards the base of the 

 olecranon process. From the inferior part of the muscle 

 arises a fibrous band, comparable to the aponeurotic ex- 

 pansion of the human biceps ; but, instead of passing down- 

 wards and inwards, as does the latter, it terminates on 

 the muscular mass which constitutes the antero-external 

 part of the forearm. 



The biceps is not seen in the superficial layer, except in 

 the dog and cat (in which the humerus is, in fact, propor- 



