320 A Composite Stmlv of the Subclavian Artery in Man 



TABLE 9. 



The Origin of the A. Cervicalis Superficialis (Superficial Cervical Artery). 



Orig-in. Thomson. Quain. Ucan. 



From the A. trausvorsa colli 589 .9G3 .590 



From the A. thyroidea inferior 312 .004 .220 



From the A. transversa scapulsE 092 .026 .190 



From the A. subelavia 002 .008 



TABLE 10. 

 The Origin of the A. Intercostalis Suprema (Superior Intercostal Artery*. 



OHo-in Quain. Bean. 



'^"^"^- Right. Left. Right. Left. 



From Part I 086 .220 .030 .075 



From Part II 482 .194 .105 



From the truncus costo-cervlcalis ... .400 .370 



From the A. vertebralis .007 .020 



From the A. thyroidea inferior .004 



TABLE 11. 



The Origin of the A. Cervicalis Profunda (Deep Cervical Artery). 



Origin. Quain. Bean. 



From the truucus costo-cervicalis .820 



From the A. intercostalis suprema 932 



From the A. subelavia 049 .130 



From the A. thyroidea inferior .040 



From the ramus descendens 018 .010 



The artery passes : 



Above the first rib 936 .820 



Below the first rib 064 .180 



TABLE 12. 



A Comparison of the Most Frequent Origin of the Branches on the Two Sides 



OF THE Body. 



A rtery. 



Right Side. 



Origin. 



From : 



Vertebralis Part I 97 



Mammaria interna Part I 95 



Truncus thyreo-cervicalis . . . Part I (5 times) 11 



Thyroidea inferior Part I 74 



Left Side. 



Origin. 



Transversa scapula? ] Part I 



Transversa colli Part II 



Ramus asc. A. tr. colli . 

 Ramus desc. A. tr. colli 

 Cervicalis superficialis 

 Cervicalis ascendens 

 Truncus costo-cervicalis 

 Intercostalis suprema . . 

 Cervicalis profunda . . . , 



Part II 66 



A. tr. colli 97 



A. tr. colli 45 



A. thyroidea inferior. . . 70 



Part I 78 



Tr. costo-cervicalis. ... 86 



Tr. costo-cervicalis .... 82 



From : 



Part I 88 



Part I 82 



Part I (25 times) 45 



Truncus thyreo-cervicalis 45 



Truncus thyreo-cervicalis 45 



Truncus thyreo-cervicalis 49 



Truncus thyreo-cervicalis 80 



A. transversa colli 90 



A. transversa colli 76 



A. thyroidea inferior. . . 70 



Part I 100 



Tr. costo-cervicalis .... 80 



Tr. costo-cervicalis .... 77 



