156 



PRACTICAL ANATOMY. 



(Fig. 105.) The ulnars converge to form the basilic vein above the elbow. 

 The medians converge to form one large vein. This vein breaks up into the 

 median ccplialic and median basilic, which join respectively the cephalic and 

 basilic veins. (Fig. 105.) 



Observe that tlic internal cutaneous nerve passes behind the median basilic 

 vein ; that the cutaneous brancli of tlic iniisculo-cntaneons nerve passes behind the 

 median cephalic vein. (Fig. 105.) 



Find the deep median vein, piercing the deep fascia near the bifurcation of 



SEMILUNAR 



ISIFORM 



I 

 c'WiEIFORM 



Extensor oarpi 

 radialis longior 



Extensor carpi 

 radialis brevior 



Extensor primi 

 interuodii pollici 



Ext. secundi 

 internodii 

 polliciB 



Extensor carpi ulnaris 



Extensor communis digitorum 



Extensor communis digitorum 

 THIRD, UNGUAL, OR TERMINAL PHALANX 



FIG. 108. THE LEFT HAND. (Dorsal surface.) 



the superficial median vein. Trace it to the ulnar vein below the deep fascia. 

 (Fig. 105.) 



Note that the median basilic vein crosses the lower part of the brachial 

 artery. Notice also the bicipital fascia between these two structures. (Fig. 

 105.) This vein was formerly a favorite in bleeding. The basilic vein termin- 

 ates in the axillary ; the c.ephalic in the axillary vein also. Find the cephalic 

 vein in a groove between the pectoralis major and deltoid muscles with the 

 descending branch of the acromio-thoracic artery below the clavicle. 



