124 ANATOMY AND PHYSIOLOGY FOR NURSES 



but drains only the scalp in the occipital region, since it 

 does not come from the cranial cavity. It enters the 

 subclavian vein. 



The inferior thyroid veins receive the blood from 

 the thyroid gland. Bach unites with its fellow, and, along 

 with the middle and superior, they form a plexus in front 

 of the trachea. The right terminates in the right in- 

 nominate vein, and the left in the left innominate vein. 



VEINS OF THE UPPER EXTREMITIES 



The veins of the upper extremities are superficial and 

 deep; the latter accompany the arteries, and are called 

 vena comites; they are sometimes enclosed in the same 

 sheath. The brachial vena comites are situated on each 

 side of the artery, and unite with the basilic vein to form 

 the axillary vein. The axillary becomes the subclavian, 

 and the subclavian unites with the internal jugular to form 

 the vena innominata. 



The superficial veins of the arm are : 



Anterior ulnar. Cephalic. 



Posterior ulnar. Median. 



Basilic. Median basilic. 



Radial. Median cephalic. 



The anterior ulnar vein collects the blood from the 

 inner part of the hand, ascends to the elbow, and unites 

 with the median basilic to form the basilic vein. 



The posterior ulnar vein takes its beginning at the 

 back of the hand, unites with the veins of the fingers, 

 ascends to the back part of the elbow, and terminates in 

 the anterior ulnar vein. 



The basilic vein arises from the ulnar, and is formed 

 by the coalescence of the median basilic with the ulnar 

 veins; it is situated on the inner side of the arm, passing 

 upward to the axilla, terminating in the axillary. 



