30 BODY. 



wards over root of left lung (on level 2d dorsal vertebra), the 

 * ' descending portion," runs down on the left side of zd and 

 3d vertebrae, there becoming thoracic aorta. In front, are left 

 pleura, lung, pneumogastric, phrenic, and cardiac nerves; 

 behind, trachea, right pulmonary vessels and nerves, root of 

 right lung, cardiac plexus, oesophagus, thoracic duct, left 

 recurrent nerve. Corona'ria dex'tra .' above free margin right 

 semilunar valve, between pulmonary artery and right auricu- 

 lar appendix; runs round right border of heart to posterior 

 interventricular groove, there dividing into 2 branches, supply- 

 ing right heart; anas, at apex with left coronary. Ccrona'ril 

 sin'istra I (smaller) above left semilunar valve, passes forwards 

 between left auricular appendix and pulmonary artery to 

 anterior interventricular groove, dividing into two branches, 

 supplying left side of heart. Innomina'ta I commencement trans- 

 verse portion of arch, ascends obliquely up to right sterno- 

 clavicular articulation, dividing into common carotid and 



subclavian. Caro'tis commu'nis sin'istra and Subcla'via sin'istra : (see 

 pages 6 and 19.) 



AOB'TA TEOEAC'ICA: (see arch) 5 branches. Terminates at 

 aortic opening in diaphragm as "abdominal aorta," there 

 lying upon front ofvetebral bodies. Pericardi'acs : to pericar- 

 dium, BroncMa'les: (3 generally) to the left bronchus. (Eseph- 

 age'ffl I (4 or 5) front of aorta, obliquely down to oesophagus, 

 anas, with inferior thyroid, gastric and phrenic Uediastina'leS 

 p:sterio'res; glands and areolar tissue therein. InterCOStalos : (;o 

 pairs) right longer than left ; pass out to do spaces, there di- 

 viding into anterior branches ascending to inferior border 

 rib above, the smaller branch of it on the superior border rib 

 below, running towards sternum, anas, with internal mam- 

 mary, thoracic branches of axillary, superior intercostal, 

 epigastric, phrenic, lumbar, etc. Posterior branch passes 

 backwards, supplying vertebrae, cord, and muscles of back, 

 (ist space supplied by superior intercostal of subclavian.) 



AOB'TA ABDOM'HTIS : (9 brs.); from aortic opening of dia- 

 phragm, in front last dorsal vertebrae, terminates on body 4th 

 lumbar, in the "common iliacs." Phren'ica : (2) obliquely 

 outwards to supply diaphragm, inferior vena cava, oesopha- 

 gus and supra-renal capsule; anas, freely. Cceli'aca '. (axis 

 Y 2 inch long) horizontally forwards, dividing into CORONA'RIA 

 VENTRIC'ULI (gastric), which passes round lesser curvature 

 stomach from cardiac end to pylorus, there inosc. with 

 hepatic. HEPAT'ICA, to the transverse fissure of liver to sup, 

 ply right and left lobes, giving oSfyltfric branch to stomach, 



