VEINS. 33 



artery, runs obliquely up- and outwards on iliac crest, su^ 

 plying adjacent muscles, and anas, with gluteal, epigastri^ 

 and lumbar arteries. 



VEINS. 



Innomlna'tffl ; right is short (1% inches long), running from 

 sterno-cLivicular articulation to join left innominate at infe- 

 rior border cartilage of ist rib, forming vena cava superior. 

 Is external to artery, and receives right lymphatic duct, right 

 vertebral, ri^ht internal mammary, right inferior thyroid and 

 ri^'it superior intercostal veins. Left is 3 inches long, runs ia 

 front of the three large arterial branches of aorta ; receives 

 corresponding venous branches as ri^ht. Neither have valves, 



Uamma'ria inter'aa : 2 to each artery, uniting in single trunk, 

 emptying into innominate. 



TJiyroide'l info'rior : (sometimes 3 or 4) from thyroid venout 

 plexus, empty. ng into right and left innominate. 



Intsrcosta'les Superio'res : from 2 or 3 superior intercostal 

 spaces, emptying into innominate. Left bronchial emptiel 

 into left intercostal. 



Vo'naca'va SUpe'rior: *% to 3 inches long, formed of venz 

 innom.natae, emptying into right auncle; receives vena azygos 

 major, and pericardial veins. No valves. 



Az'ygOS ffia'jor : opposite ist or ad lumbar vertebra, from 

 right lumbar veins, up through aortic diaphragmatic opening 

 to right side 3d dorsal vertebra, arching over root right lung, 

 emptying into vena cava. Receives the jo lower right inter- 

 costal veins, vena azygos minor, several oesophageal, media*- 

 tinal, vertebral, and right bronchial veins. Imperfect valves, 

 though its branches have complete ones. 



Az'ygOS ai'nor irfe'rior : lumbar region of left side from lun> 

 bar veins, or branches of renal, through left crus of di- 

 aphragm to 6th or 7th dorsal vertebra, there crossing to 

 terminate in azygos major. Receives 4 or 5 lower intercostal, 

 and some oesophageal and mediastinal veins. 



Az'ygOS mi'nor SUpe'rior : from branches intercostal and azy- 

 gos minor inferior veins ; empties into one of the other azygos 

 veins. 



Bronchia' S! from lungs; the right terminating in azygo* 

 major ; the left in the left superior intercostal. 



Spina'les : dorst-sjina'lis, whole length of back of spine, 

 forming network, terminating in the vertebral (of neck), th 

 intercostal (of thorax), lumbar and sacral veins. Longitndl 

 na'les swindles anterio'res, whole length vertebral forameuj 



