96 



SURGICAL ANATOMY OF 



transversalis colli artery, also a branch of the main 

 trunk in the first part of its course, lies superior to the 



Region of the third part of the subclavian artery (the shoulder represented 

 depressed). A. Splenius. B. Levator anguli. c. Scalenus posticus. D. First 

 serration of serratus magnus. K. Costo-coracoid membrane and cephalic vein. 

 F. Subclavian artery. G. Transversalis colli artery (deep). H. A more super- 

 ficial branch, i. Supra-scapular artery. K. Subclavian vein. L. Supra-scapular 

 vein. M. Brachial plexus. N. Scalenus anticus. o. Phrenic nerve. 



artery, but beneath the cervical plexus it passes towards 

 the trapezius, to reach the posterior border of the scap- 

 ula. These vessels are accompanied by veins forming 

 a plexus, which lies superficial to the artery, and may 

 cause considerable difficulty in any operation in this 

 region, especially when engorged. 



