31. There is a considerable degree of venous mixing in the right ventricle , leading to lower oxygenation saturation. 32. The left bundle branch activates the left ventricle, while the right bundle branch activates the right ventricle . 33. During inspiration, the negative pressure in the thoracic cavity will cause increased pressure into the right ventricle . 34. The anterior cardiac veins drain the front of the right ventricle and drain directly into the right atrium. 35. The right coronary artery supplies the right atrium, right ventricle , and lower posterior sections of the left ventricle. 36. Blood from the right ventricle goes to the lungs through the pulmonary artery, as in mammals and birds. 37. From the vena cavae, the increased blood volume flows through the right atrium and into the right ventricle . 38. In this case, the scan demonstrates features of ARVC with fatty infiltration of the left and right ventricles . 39. The walls of the right ventricle are lined with trabeculae carneae, ridges of cardiac muscle covered by endocardium. 40. The right ventricle then contracts, sending the blood through the Pulmonary valve to the lungs to be oxygenated.