Blood flows from the right atrium through the tricuspid valve to the right ventricle, then on through the pulmonary valve to the pulmonary artery and lungs. Pulmonary veins return blood to the left atrium through the bicuspid, or mitral, valve to the left ventricle and through the aortic valve to the aorta and the rest of the body. To remember the order of blood flow through the valves, remember this mnemonic:Try Performing Better Always (Tricuspid, Pulmonary, Bicuspid, Aortic)