DIGESTIVE SYSTEM 



755 



(1) The pericardial cavity which contains the heart only. 



(2) The pleuroperitoneal cavity which contains the other viscera. 





Fig. 439. 



A dissection of the neck and thorax of a rabbit. The heart has 

 been displaced a little to the right, and the pericardium removed. 



ao.a., Aortic arch ; c.c., common carotid arteries ; c.sy., cervical 

 sympathetic nerve ; d.ao., dorsal aorta ; dep., depressor nerve ; di., 

 diaphragm ; du.ar., ductus arteriosus ; ex.j , external jugular vein ; f.c., 

 point at which the common carotid divides ; hy., hypoglossal nerve ; 

 i.c.g., inferior or posterior cervical sympathetic ganglion ; inn., in- 

 nominate artery ; i.v.c., inferior vena cava, lying in mediastinum ; l.au., 

 left auricle ; l.l., left lung ; l.phr., left phrenic nerve ; l.pl c., left pleural 

 cavity; l.v., left ventricle; lar., larynx; aes., oesophagus in neck; ces'., 

 the same in mediastinum ; p.c., posterior cornu of the hyoid ; pul.a., 

 pulmonary artery ; pul.v., pulmonary vein ; r.au., right auricle ; r.d., 

 ramus descendeus ; r.L, right lung, one part bulging into mediastinum; 

 r.lar., recurrent laryngeal nerve ; r.pl.c., right pleural cavity ; T.V., right 

 ventricle ; s.c.g., superior cervical sympathetic ganglion ; s.lar., superior 

 iaryngeal branch of vagus ; s.v.c., superior vena cava ; scl., subclavian 

 artery and vein ; smx., submaxillary gland ; t.m., tendon of mandibular 

 muscle ; thy., thyroid gland ; tra., trachea ; v.., vagus ganglion ; vag., 

 vagus ; W.d., duct of submaxillary gland (Wharton's duct) ; X., XII., 

 cranial nerves. (From Borradaile. ) 



