226 BULLETIN OP THE UNIVERSITY OF WISCONSIN. 



VEINS OF THE ARM. 



Beginning at the distal end we find that each digit has two 

 veins, one on each side ; these two veins usually unite and form 

 single vessels, these in turn form a transverse vein on the dor- 

 sal surface of the hand which passes across the extensor digi- 

 torum communis near the proximal end of the digits. ISTear the 

 middle of the hand this vein turns toward the body and runs 

 as the Radial Veijst, Rdl., PI, 11, as far as the elbow; here it 

 is joined by a vein from the opposite side of the arm, the Ulnae 

 Vein";, W., PI. 11. By the junction of the radial and ulnar veins 

 there is formed the Beachial Vein, Hum., PL 11; this runs 

 along the arm between the biceps and triceps muscles, and, pass- 

 ing over the glenoid fossa to the lateral side, continues to a 

 point w'hicli is anterior and ventral to the Duct of Cuvier. Here 

 it is joined by the lingual vein and empties directly into the 

 Duct of Cuvier. Between the glenoid fossa and the Duct of 

 Cuvier the vein is called the Subclavian, Sbc, PI. 11. Just 

 above the glenoid fossa the subclavian receives branches which 

 come from the anterior part of the arm and from the muscles 

 about the scapula. 



PULMONAEY VEINS. 



The PuLMONAEY Veins, p., PL 11, are two in number, one 

 from each lung. They run along the latero-ventral side of the 

 lung and unite in the mid-line anterior to the union of the two 

 lungs. From this point of union the now single pulmonary 

 vein runs anteriorly towards the heart, and passing to the dor- 

 sal side of the two arms of the Hepatic Sinus it usually con- 

 tinues in the wall of the left arm of the sinus until it finally 

 opens into the left atrium of the heart. 



