Left lateral view. It can be observed the pulmonary artery (PA) arising from the right ventricle, the last one separated from the left ventricle (LV) by the left anterior descending artery (*). In the right margin, the left atrium appendage (LAA) arising from the left atrium. The heart with the fat and collagenous tissue (visceral pericardium) is the natural aspect of the heart when a coronary bypass is to be performed. Knowledge of the location of the vesells is critical to avoid injury of the veins.