THE THORAX 



1109 



sixth, the third to the seventh, tin- f.,urth to th.- ci-hth, th.- tifth t., thi' ninth th.> 

 sixth to the tenth and the seventh to the eleventh. If a Imrizuntal line h,- drawn 

 round the hodv from heiore haekwards, at th.- level <,f the inferi.,r ande of the 

 seapula, win e the arms arc at the sides, the line would eut the sternum in fmnt 

 between the fourth and fifth rihs, the fifth rib at the nij,],!.- line, and the ninth ril. 

 at the vertebral column' (Treves). Those most fre.juentlv broken are the nxth 

 seventh, and eighth. The way in which the ribs are en.r.e.Me.l in the >^oft i)art>^' 



Fig. 681. 



RIGHT UECrR. 



JiE.VT LARyy- 



tiKAL .VERVE 



TYaiisieise cervical 



artery 



Rlyhl common carotid 



artery 

 Suprascapular artery 



Internal jugular vein 



PNEUifOGA STRIC 

 XER VE 

 Subclavian vein 



Inferior thyroid vein 



PHRENIC NERVE 



Left innominate vein 



Ascending aorta 



Superior vena cava 

 RIGHT BRONCHUS 



Branch to superior lol» 



of lung 



Upper branch of right 



pulmonary artery 



Branch to miildle hth' 



of lung 

 Right pulmonary i 



RIGHT AURICLE 



Right coronary artery 

 Lotnr hranch of right 

 liiitniunari/ arlen/ 

 THORACIC VERTEBRA 



Intercostal vein 

 Intercostal artery 

 Vena azygos major 



Intercostal vein 

 Intercostal artery 



Intercostal vein 

 Intercostal artery 



-The 

 ( From 



Akch of the Aokta, with the Pulmoxakv Aktekv and 

 Chief Buaxches of the Aokta. 



a dissection in St. Bartholoiiu-w'.s HospiUil Sluseuin. i 



THYROID BODY 

 LEFTRECVRRI:.\ I 

 LARYSflEAl. 

 NERVE 

 I'NEl MttfiASTRV ' 



NER VE 

 Lrjt intentitt jugutat 



vin 

 I^ejt cofnviou carotid 



arlrri/ 

 I^/t subclat-iun artery 



I^/l mbclarinn vein 



TRACHEA 



Inferior thyroid vein 



PHRENIC NERVE 



(hookeil aside) 

 RECVRRENT 

 LARYNUEM. 

 NER VE 

 PNELMOGA S TRIi ' 



NERVE 

 DUCTUS ARTERIOSUS 



Left pulmonary artery 



^ Pulmonary artery 



Right putmotiary 

 arl'-rg 



LEFT BRONCHUS 



I^fl coronary artery 



I'pper left pulmonary 



vein 

 RIGHT VENTRICLE 



( Von us arleriuntit i 

 lAtwer t^t puliiiuniiry 



artery 

 Ixtwer left pulmonary 



rein 

 (ESOPHAGUS 

 (hooked aside) 



THORACIC OUCT 

 Thoracic aorta 



and the fact that the frafnnents are often held in jilace by the fteriosteum. accounts 

 for the ditliculty which is often met with in detecting Crepitus. The intercostal 

 spaces are wider in front than behind. The three upper are the wide.<t of all. 



Structures passing through the upper aperture of the thorax.— If a 

 horizontal section is made jtassinir throUirh the manul)rium stenii. upper border of 

 the first rib. and upper part '>f the fii-st thoracic vertebra, the followinir structures 

 are met with: — (1) In the middle line. Sterno-hyoid an<l .«terno-thyroid 

 muscles, with their sheaths of deep cervical fascia, cellular ti.s.sue in which are the 



