Cardiac impression on lung
Encyclopedia
The mediastinal surface of the lung
presents a deep concavity, the cardiac impression, which accommodates the pericardium
; this is larger and deeper on the left lung
than on the right lung
, on account of the heart projecting farther to the left than to the right side of the median plane.
Lung
The lung is the essential respiration organ in many air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located near the backbone on either side of the heart...
presents a deep concavity, the cardiac impression, which accommodates the pericardium
Pericardium
The pericardium is a double-walled sac that contains the heart and the roots of the great vessels.-Layers:...
; this is larger and deeper on the left lung
Left lung
The human left lung is divided into two lobes, an upper and a lower, by the oblique fissure, which extends from the costal to the mediastinal surface of the lung both above and below the hilum....
than on the right lung
Right lung
The human right lung is divided into three lobes , superior, middle, and inferior, by two interlobular fissures:-Fissures:...
, on account of the heart projecting farther to the left than to the right side of the median plane.