1406 



SUKFACE AND SUKGICAL ANATOMY. 



FIG. 1097. 



FIG. 1098. 



r 



FIG. 1099. 



FIG. 1100. 



From photographs of a formalin-hardened subject, with the heart dissected in situ, to show the relations of : 

 cavities and valves to the anterior wall of the thorax. 



In Fig. 1097 the anterior wall of the right ventricle has been removed and the pulmonary artery opened. 



In Fig. 1098 the anterior walls of the ascending aorta and of the right atrium have been removed ; also t 

 anterior cusp of the tricuspid valve. 



In Fig. 1099 the greater part of the interventricular septum has been removed, exposing the anterior cusp 

 mitral valve. 



In Fig. 1100 the ascending aorta, anterior cusp of mitral valve, trunk of pulmonary artery, and interauricu! 



septum have been removed ; the cavities of the left atrium and left ventricle are exposed, also the I 



auricle and posterior cusp of mitral valve. 



R.A. Right atrium. P. A. Pulmonary artery. M.V. Mitral valve. 



R.V. Right ventricle. P.V. Pulmonary valve. S.V.C. Superior vena cava. 



L.A. Left atrium. A. Aortic arch. P.V. Pulmonary vein. 



L.A.A. Left auricle. A.V. Aortic valve. M. Moderator band. 



S.V. Interventricular septum. T.V. Tricuspid valve. 



