REGION OF THE ELBOW. 



28g 



parts above. There are two veins on the ulnar side, an anterior and a posterior. The 

 anterior carries the blood from the anterior ulnar aspect and the posterior ulnar from 

 the posterior ulnar aspect of the wrist and forearm. All these veins contain valves 

 at intervals of a few inches. The median vein passes up the middle of the anterior 

 surface of the forearm, and just below the lower edge of the bicipital fascia communi- 

 cates with the deep veins accompanying the radial and ulnar arteries. This commu- 

 nication is large, distinct, and always present (Fig. 300). 



The median vein then divides into the median basilic, which passes upward in 

 the internal bicipital furrow, and the median cephalic, which follows the edge of the 



Median nerve 



Internal cutane 

 (antibrachii medialis) in 



Brachialis anticus muscle 



Posterior ulnar vein 



Anterior ulnar vein 



Bicipital fascia 



Brachial artery 



Biceps muscle 



Median basilic vein 



Median cephalic vein 



Musculocutaneous 

 nerve (antibrachii 

 lateralis) 



Communication 

 between the deep and 

 superficial veins 



Radial vein 



Median vein 



FIG. 300. Veins at the bend of vhe elbow. 



biceps to the external bicipital furrow. Three or four centimetres above the bifurca- 

 tion of the median, the median cephalic vein is joined by the radial, and from that 

 point up it is called the cephalic vein. 



The two ulnar veins just below the medial (internal) condyle or sometimes 

 just. above it empty into the median basilic vein, which from this point is called 

 the basilic vein. Sometimes the two ulnar veins, anterior and posterior, unite and 

 empty into the median basilic by a common trunk. The median basilic vein passes 



19 



