110 



PLATE LV. 



MUSCLES 



A The heart. 



B Eight auricular appendix. 



C Left auricular appendix. 



D Pericardium. 



E Diaphragm. 



F Internal surface of the pleura. 



G Thyroid gland. 

 H Cricoid cartilage. 

 K Crieo-thyroid muscle- 

 L Scalenus anticus. 

 M Trachea. 



VESSELS 



a Ascending part of aortic arch. 



b Transverse part of arch. 



c Innominate artery. 



A Eight common carotid. 



e Eight subclavian. 



/ Left common carotitL 



g Left subclavian. 



h Thyroid axis. 



i Supra-scapular. 



k Transverse cervical. 



I Inferior thyroid. 



m Internal mammary. 



n Pulmonary artery. 



n' Ductus arteriosus. 

 o Superior vena cava. 



f 



r 

 s 



t 



v 



x Inferior thyroid vein. 



y Middle thyroid vein. 



Left innominate vein. 

 Eight innominate vein. 

 Internal jugular vein. 

 Subclavian veins. 

 Vertebral artery. 



Left superior intercostal vein. 

 Pulmonary vein. 

 Vertebral vein. 



1 Phrenic. 



2 Vagus. 



3 Left recurrent laryngeal. 



4 Thoracic cardiac from vagus. 



NERVES 



5 Inferior cervical cardiac of sympathetic 



of left side. 



6 Eight cervical cardiac of the sym- 



pathetic. 



