Very little: Both valves control blood flow (pulmonary to the lungs and aortic valve to the rest of the body). The pulmonary valve/circult is a low pressure circuit and the aortic valve is a high pressure circuit. When the valves close they make up the second heart sound.
Answered 9/28/2016
6.3k views
Valves: Structurally and functionally the aortic and pulmonary valves are similar although the pulmonary valve sees lower pressures.
Answered 7/21/2013
5k views
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