50 UNIVERSITY OF MISSOURI STUDIES 



The liver is separated by the diaphragm from the heart 

 and lungs. The superior surface of the right lobe is al- 

 most entirely under cover of the base of the right lung. 

 Near the midplane it is overlaid by that part of the right 

 auricle into w^hich the vena cava inferior opens. The super- 

 ior surface of the left lobe lies under the heart and the base 

 of the left lung. The anterointernal part of the surface is 

 in relation -with the heart. In the region of the inferior 

 cava! opening, in common vi^ith the right lobe, the left lobe 

 is in relation with the right auricle. This area is small 

 and lies to the right of the midplane of the body. The re- 

 mainder of the cardiac area is roughly quadrilateral in 

 form and is divisible into an anterointernal and a postero- 

 external triangle. The anterior triangle corresponds to the 

 right ventricle, the posterior to the left ventricle. Posterior 

 and external to the cardiac area the liver is in relation with 

 the base of the left lung (see relations of lung and heart). 

 Below the lungs and heart the superior surface of the liver 

 is in contact with the diaphragm and abdominal wall. 



The posterior surface of the right lobe is attached to 

 the diaphragm. It is in relation through the diaphragm 

 with the inner and posterior part of the base of the right 

 lung. The nonperitonaeal upper pole of the suprarenal 

 gland is interposed between this surface of the liver and the 

 diaphragm opposite the disc between the eleventh and 

 twelfth thoracic vertebrae (Plate XV). The inner part of 

 the posterior surface is separated from the base of the 

 Spigelian lobe by a deep groove containing the vena cava 

 inferior (Plates XIII, XIV and XV). The posterior surface 

 of the left lobe is narrow and triangular with its apex out- 

 ward towards the beginning of the left triangular ligament. 

 It lies in section XII (not shown in the plates) over the 



