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LABORATORY MANUAL OF HUMAN ANATOMY 



These will be found upon the arcus aortae between the N. 

 vagus and the N. phrenicus. On dissection of the plexus, look 

 for the cardiac ganglion of Wrisberg (ganglion cardiacum 

 [Wrisbergi]). 



Pericardium. 



Clean the external surface of the pericardium thoroughly; 

 observe the ligaments which connect the pericardium to the ster- 

 num (ligamenta sternopericardiaca) . Examine the exact rela- 

 tions of the pericardial sac to the diaphragm. Compare the 

 general relations of the pericardium in the cadaver with the de- 

 scription in a good text-book. 



FIG. 204. 



Pulmonary 



Lacteals 



Veins of the body 



Lymph-channel 



Pulmonary veins 



s -Arteries of the body 



Intestine 



Schematic representation of the vascular system with the lymph- and chyle- vessels. (After Gegenbaur, 

 Lehrb. der Anat. des Mensch., Leipzig, 1899, 7 Aufl., Bd. ii. p. 203, Fig. 498.) 



Open the pericardium by a crucial incision, making a vertical 

 cut through it from the aorta to the diaphragm and a transverse 

 cut in a line from the middle of the root of one lung to that of the 

 other. Examine 



(a) Parietal pericardium (pericardium). 



(b) Visceral pericardium (epicardium) . 



(c) Pericardial fluid (liquor pericardii). 



(d) Transverse sinus of pericardium (sinus transversus pericardii). 



