406 



ARTERIES. 



Fig. 218. The Surgical Anatomy of the Brachial Artery, condyles of the humerus, which 



corresponds to the depression along 

 the inner border of the Coraco- 

 brachialis and Biceps muscles. In 

 the upper part of its course, this 

 vessel lies internal to the humerus ; 

 but below, it is in front of that 

 bone. 



Relations. This artery is super- 

 ficial throughout its entire extent, 

 being covered, in front, by the in- 

 tegument, the superficial and deep 

 fasciae ; the bicipital fascia separates 

 it opposite the elbow from the me- 

 dian basilic vein ; the median nerve 

 crosses it at its centre ; and the basilic 

 vein lies in the line of the artery, 

 but separated from it by the fascia, 

 in the lower half of its course. 

 Behind, it is separated from the 

 inner side of the humerus above, 

 by the long and inner heads of the 

 Triceps, the musculo- spiral nerve 

 and superior profunda artery inter- 

 vening ; and from the front of the 

 bone below, by the insertion of the 

 Coraco-brachialis and the Brachialis 

 anticus muscles. By its outer side, 

 it is in relation with the commence- 

 ment of the median nerve, and 

 the Coraco-brachialis and Biceps 

 muscles, which slightly overlap the 

 artery. By its inner side, with the 

 internal cutaneous and ulnar nerves, 

 its upper half; the median nerve, 

 its lower half. It is accompanied 

 by two veins, the vense comites; 

 they lie in close contact with the 

 artery, being connected together 

 at intervals by short transverse 

 communicating branches. 



PLAN OF THE KELATIONS OF THE BRACHIAL ARTERY. 



In front. 



Integument and fascia;. 

 Bicipital fascia, median basilic vein. 

 Median nerve. 



Outer side. 

 Median nerve. 

 Coraco-brachialis. 

 Biceps. 



Inner side. 

 Internal cutaneous. 

 Ulnar and median nerves. 



Behind. 

 Triceps. 



Musculo-spiral nerve. 

 Superior profunda artery. 

 Coraco-brachialis. 

 Brachialis anticus. 



