DISTRIBUTION OF THE ANTKIUOR AORTA. 



1, Anterior aorta; 2, Left axillary artery; 3, Kight axillary artery; 4, Dorsal 

 artery; 5, Subcostal artery; G, Sxiperior cervical arli'i-y; 7, Vertebral artery; 

 8,8', Inferior cervical artery; 9, Origin of the internal thoracic artery; 10, 

 Origin of one of the external or intercostal liranches of this artery ; 1 1, One of 

 its inferior ramuscules; 12, External thoracic artery; 1.".. Origin of tin; Miper- 

 scapular artery ; 14, Primitive, or common carotid artery ; 14', Accessory thyroid 

 artery; 14" Thyro-laryngeal artery ; 1">, Atloido-muscular artery ; 16, Occipito- 

 muscular artery ; 17, Posterior aorta. A, Pulmonary aorta ; U, Trachea ; C, (Eso- 

 phagus; D, Cervical ligament; K, Superior branch of the ilio-spinal muscle; F, 

 Inferior branch of the same ; o, Great complex us muscle ; H, >Splenius muscle ; 

 i, I, Originating aponeurosis of the splenius and the small anterior serratus 

 muscles ; K, Section of the great oblique muscle of the head ; L, Great posterior 

 rectus muscle of the head; M, Great anterior ditto; N, Sterno-maxillaris muscle; 

 o, r, Great pectoral and sterno-prescapularis muscles turned downwards. 



