Arteries of the Neck. 



A. vertebralis 



405 



M. semispinalis cervicis 



Os hvoideimi 



Vertebra ceivicalis IV 

 R 



Ramus profundus P - - 



. '.-if ; --'' \Jf_ 'r,.l - 



Ramus ascendens a. transversae colli "- 



M. scalenus medius 



M. scalenus anterior (cut through) 

 M. levator scapulae 

 Ramus spinalis 

 Ramus muscularis 

 A. cervicalis ascendens 



A. cervicalis superficialis 



A. vertebralis -- 



^^I'runcus costocervicalis 

 Rauius ascendens 



X. transver! 



r 



ansversa colli 



Ramus 

 acromialis 



Rete 

 acromiale 



Ramus 

 acromialis 



M. infra- 

 spinatus 



M. biceps 



(caput 



longum) 



Ramus hyoideus 



A. thyreoidea superior 

 - A. carotis communis 



~ Ramus cricothyreoideus 

 Ramus posterior 



Ramus anterior 

 A. thyreoidea inferior 

 Ramus oesophageus 

 Ramus trachealis 



Trunciis thyreocervicalis 

 A. subclavia 



A. transversa scapulae 



mammaria interna 



A. axillaris 



A. thoraco- 

 acromialis 



A. thoracalis 

 lateralis 



A. mammaria 



interna 



Ramus 



pertorans 



Ramus. 



muscularis 



A. circumtlexa humeri anterior 

 A. circumflexa humeri posterior 



449. A. subclavia dextra, viewed from the right. 



(Most of the clavicle has been removed, as have been the muscles attached to the clavicle, 

 the m. scalenus anterior and the mm. pectorales and deltoideus.) 



3. A. mammaria interna (continued) (see also Fig. 450): 



e) Eatni steraales, medianward to the posterior surface of the sternmu; there they form 



a network of anastomoses with the vessels of the same name of the other side. 



f ) Rami perforantes, 6 7. the uppermost usually between the two heads of the m. sterno- 



cleidoraastoideus (see Fig. 434), the others through forward the uppermost 6 inter- 

 costal spaces. They supply the m. pectorahs major and the skiu of the frc>nt of the 

 chest (rami muscxiiares, rami cnlanei). Among the latter that which comes i'rom the 

 2nd intercostal space is usually very large, bends downward to the mamma and supphes 

 it by means of the rami mammarii. The branch perforating the 'o^^ intercostal space 

 is also large and supplies the skin in front of the m. rectus abdominis as far as the navel. 



g) P\.ami iutercnstales, two for each intercostal space, arise separately or in common. They 



run lateralward in the six upper intercostal spaces close to the ribs, supply the 

 muscles and the pleura and anastomose with the aa. intercostales. The branch 

 running at the lower margin of each rib is the larger. 



