426 



LABORATORY MANUAL OF HUMAN ANATOMY 



(aca) Anterior and posterior oesophageal plexuses (plexus 

 oesophageus anterior et posterior] (0. T. plexus 

 gulae). 



(b) Thoracic part of oesophagus (oesophagus, pars thoracalis). 



(c) Thoracic part of aorta descendens (aorta thoracalis}. 



Examine the aortic spindle. Study 



(ca) Visceral rami (rami viscerales). 



(caa) Bronchial arteries (Aa. bronchiales) . 



(cab) Oesophageal arteries (Aa. oesophageae). 



(cac) Pericardiac rami (rami pericardiaci) . 



(cb) Parietal rami (rami parietales). 



(cba) Mediastinal rami (rami mediastinales) . 

 (ebb) Superior phrenic arteries (Aa. phrenicae supe- 

 rior es). 

 (cbc) Intercostal arteries (Aa. intercostales) . 



FIG. 217. 



Truncus bronchomediastinalis 



Ductus thoracicus 



.Cisterna chyli 



Truncus lumbalis 

 Truncus intestinalis 



The large lymph-vessels opening into the venous system. Schematic. (After Gegenbaur, Lehrb. 

 der Anat. des Mensch., Leipzig, 1899, 7 Aufl., Bd. ii. p. 339, Fig. 566.) 



(d) Thoracic duct (ductus thoracicus). (Fig. 217.) 



(e) Posterior mediastinal lymph-glands (lymphoglandulae mediastinales 

 posteriores). 



Interior of the Lungs. 



Cut through the trachea three centimetres above its bifurca- 

 tion. Eemove the lungs from the body. With a medium-sized 

 scissors with one blunt-ended blade, cut open the bronchus and 



