About the aortic valves, which of the following descriptions are correct?
A.Three aortic valves are semilunar in shape. B.They are also called the tricuspid valves. C.They guard an exit of the aortic vestibule. D.The spaces between the wall of ascending aorta and the valves of aorta are called aortic sinuses. E.The right coronary artery opens into the the posterior aortic sinus.正确答案ACD
