Verapamil lowered just the norepinephrine or urotensin II induced contraction during the existence of extracellular Ca2+, with little if any change inside the contraction in Ca2+-free buffer. The urotensin I induced leisure response in aortic strips contracted by 40 mM KCl was enhanced by pretreatment with papaverine or forskolin. Pretreatment https://freds123thv9.wikisona.com/user