246 Intercoftal and Bronchial Arteries, Cs?r. [Book IX. 



branches, the thoracica fuperior, mammaria externa, 

 thoracica humeralis, and axillaris fcapularis, which are 

 diftributed on the parts from which they derive their 

 names. The arteria axillaris, where it pafles behind 

 the tendon of the pedoralis major, again changes its 

 name to that of the arteria brachialis. Between the 

 axilla and the middle of the arm, the artery is only co- 

 vered by the common integuments ; below this it 

 pafles under the biceps mufcle, and runs obliquely 

 forwards as it dcfcends. In its courfe, it continues to 

 fend off branches to the adjoining parts. A little more 

 than a finger's breadth below the bend of the arm, the 

 arteria brachialis divides into two branches, called the 

 cubitalis and radialis, the former of which lies next 

 the ulna, the latter next the radius. 



Tha aorta, having completed its arch, is directed 

 downwards, being Jituated towards the left fide of the 

 fpine. Below the fourth vertebra of the back, it ob- 

 tains the name of the defcending aorta, which, be- 

 tween this part and the diaphragm, fends off the fol- 

 lowing branches : 



The inferior intercoftal arteries are generally feven 

 or eight on each fide. They arife in pairs along the 

 pofterior part of the aorta, and run tranfverfely towards 

 each fide on the bodies of the vertebra. They after- 

 wards pafs in the bony ridge at the inferior edge of the 

 ribs, almoft as far as the fternum, being diftributed in 

 their courfe on the intercoftal mufcles. 



The bronchial arteries are two or three in number, 

 which fometimes arife from the aorta, fometimes are 

 branches of the fuperior intercoftal, or of the arteries of 

 the cefophagus. They enter with 'the divifions of the 

 bronchia into thefubftance of the kings, on which they 

 are diftributed. 



The arteries of the cefophagus are generally two 



or 



