1.1 



ANATOMY IX A NUTSHELL. 



making the acromial rete. [f we substitute in this rete or net-work of arter- 

 ies, thisbranch for the subscapular artery we will have the blood supply to the 

 shoulder-joint. (3) The thoracic branches supply the Pectoral muscles and the 

 Serratus magnus, and anastomoses with the intercostal arteries both from the 

 aorta and the internal mammary. There are two or three of these branches. 

 I \ clavicular branch may pass to the Subclavius muscle. 



PLATE XX] 



CONOID LIG'T. TRAPEZOID LIGT BICEPS AND CORACOBRACHIALIS 



RIOCES 



SERRATUS 

 MAGNUS. 



Tin I.i l i Si \n i.\ Anterior Surface, or Venter 



The alar thoracic is no1 a constanl branch; ii supplies the glands and half 

 of the axillary space. V> hen ii is absenl its place is filled by a branch from on.' 

 of the other thoracic arteries. 



The anterior or ion- thoracic, oi external mammary passes along the lower 

 border of the Pectoralis minor muscle to about the sixth intercostal space, sup- 

 plying the Pectoral and Serratus magnus muscles, and the mammary gland. 

 h anastomoses with the intercostal, internal mammary, and superior thoracic 



