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The superficial cardiac plexus lies between the aorta and the 

 right pulmonary artery. It is formed by the left superior 

 cardiac nerve and the lower cervical cardiac branch of the 

 left vagus, a small ganglion (Wrisberg's) being found at their 

 point of union. It forms a great part of the right coronary 

 plexus, and sends filaments to the anterior pulmonary plexus, 

 and sends branches to the deep cardiac plexus. 



The deep cardiac plexus lies in front of the trachea at its 

 bifurcation, above the point of division of the pulmonary artery 

 and behind the aorta. It receives all the cardiac branches of 

 the sympathetic, excepting the left superior cardiac; and of the 

 vagus and its recurrent branches, excepting the lower cervical 

 cardiac branch of the left side. 



From the left side of the plexus branches pass to the super- 

 ficial cardiac plexus and to the left coronary plexus. From 

 the right, the branches in part join those from the superficial 

 plexus to form the right coronary plexus; some pass to the 

 left coronary plexus, others to the right auricle. Both sides 

 of the plexus furnish filaments to the anterior pulmonary 

 plexuses. 



The left coronary plexus surrounds the left coronary artery 

 and its branches, and supplies the cardiac muscle. The right 

 surrounds the right coronary artery in a similar way. The 

 former receives its filaments from the deep plexus, the latter 

 from both superficial and deep. 



The epigastric (solar) plexus is placed in front of the aorta 

 and crura of the diaphragm, behind the stomach, and between 

 the suprarenal bodies. It receives the great splanchnic nerves, 

 and the vagi send branches to it. It consists of a collection 

 of nerves and ganglia, and its branches accompany the vessels 

 to the principal viscera of the abdomen. 



The largest of its ganglia are the semilunar, one on each 

 side. They lie near the suprarenal bodies, in front of the 

 crura, the right one beneath the inferior vena cava. They 

 receive the great splanchnic nerves. The lower portion of each 

 semilunar ganglion is detached, and is called the aorticorenal 

 ganglion. 



The branches of the solar plexus form secondary plexuses, 

 and are the following: 



The phrenic plexus, on the artery of the same name, to the 

 diaphragm, supplies also the suprarenal capsules. It joins 



