Effects of astragaloside Ⅳ on myocardiac dynamics and cardiac function with normal and depressant cardiac function in rats Investigation on the Mechanism of Antiasthmatic Effect of Total Coumarins in the Fruit of Cnidium monnieri(L.) Cuss. Effects of Breviscapine on Isolated Rat Thoracic Aortic Ring Effect of SINI TANG on contraction of aortic rings induced by high K+ and phenylephrine