500 



OPERATIONS ON THE CIEOULATOEY SYSTEM. 



1^ 



--••»fffi* J * ' ' J - 'I 



- a 



- B 



-f 



-a 



• c 



sin 



Fig. 444. — Anatomy of tli© Ceplialic Vein, -m., Median subcutaneous vein; b, basilic 

 vein; c, cephalic vein; d, inferior extremity of the coraoo-radialls; t, aponeurotic band 

 extending from the coraco-radlalis to the anterior extensor of the metacarpus; a, ster- 

 no-humeralis; ft. mastoido-humeralis; «, space between these two muscles;/, humeral 

 vein. 



On account of the presence of the other terminal branches of 

 the main veiti, from which the cephahc rises, viz., the basilic, pres- 

 sure upon the cephalic does not allow of its dilatation. To obtaia 

 this, the animal must be exercised for some time, and when 

 brought to stand still, to raise the opposite leg, or to carry the 

 leg to be bled forward. 



As the vein is easily displaced from its position, it is hardly 



