Verapamil diminished only the norepinephrine or urotensin II induced contraction within the existence of extracellular Ca2+, with little if any adjust within the contraction in Ca2+-free buffer. The urotensin I induced relaxation response in aortic strips contracted by 40 mM KCl was Improved by pretreatment with papaverine or forskolin. Pretreatment https://ralphn343rdm6.wikicorrespondent.com/user