lis 



ANATOMY IN A NUTSHELL. 



The posterior ulnar begins a1 the ulnar aspecl of the wrist, from which it 

 passes to the bend of the elbow to join the anterior ulnar. 



The common ulnar runs upward and outward to join the median basilic to 

 form the basilic, which pierces the deep fascia in the inner side and below the 

 middle of the forearm to ascend with the brachial artery and continues as the 

 axillary vein. At times the common ulnar is absent, the anterior and posterior 

 ulnar joining the median basilic separately. 



The median vein is formed on the palmar surface of the hand and passes to 

 the bend of the elbow where it divides into two branches, median basilic and 

 median cephalic. It communicates with the venae comites of the ulnar be- 

 fore it reaches the elbow. This communicating link is called the deep median 

 vein. 



The radial begins on the dorsum of the thumb and radial aspect of the hand; 

 ii passes to the elbow-joint where it joins the median cephalic forming the 

 cephalic. 



The cephalic vein passes on the outer side of the Biceps to the groove be- 

 tween the Heboid and the Pectoralis major; it perforates the deep fascia and 

 the costo-coracoid membrane to end in the axillary vein below the clavicle. It 

 occasionally connects with the external jugular or subclavian by a branch in 

 front of the clavicle called the jugular cephalic. 



The deep veins of the upper extremity accompany the arteries; they are 

 called venae comites and are connected along their course by transverse branches. 

 The digital arteries have venae comites which unite at the base of the fingers to 

 end in venae comites of the superficial palmar arch. Those of the radial side 

 accompany the superficialis volae,while those of the ulnar side end in the deep 

 ulnar veins. The veme comites of the ulnar and radial unite to form the 

 brachial venae comites. The venae comites of the anterior and posterior inter- 

 osseous unite at the proximal extremity of the forearm, ending in the ulnar 

 venae comites. The deep palmar veme comites empty into the radial externally 

 and the ulnar internally. The brachial veme comites are formed by those of 

 the forearm; they accompany the artery and empty into the axillary just above 

 the lower border of the tendon of the Latissimus dorsi. 



The axillary vein is a continuation of the basilic. It accompanies the axil- 

 lary artery and becomes the subclavian vein at the upper extremity of the axilla. 

 It has a pair of valves opposite the lower border of the Subscapularis. It 

 receives radicles corresponding to the branches of the axillary artery. It also 

 receives the cephalic vein. 



