The left pulmonary surface faces the left lung, is broad and convex, and consists of the left ventricle and a portion of the left atrium (Fig. 3.66).
The right pulmonary surface faces the right lung, is broad and convex, and consists of the right atrium (Fig. 3.66).
Some general descriptions of cardiac orientation refer to right, left, inferior (acute), and obtuse margins:
The right and left margins are the same as the right and left pulmonary surfaces of the heart.