Bradykinin causes: (A) Stimulation of the visceral smooth muscle, (B) Stimulation of the vascular smooth muscle, (C) Inhibition of the visceral smooth muscIe, (D) Inhibition of the vascular smooth muscle
Answer is A. They cause contraction of visceral smooth muscle, but they relax vascular smooth muscle NO, lowering blood pressure. Bradykinin is a potent vasodilator. (Ref: Ganong's review of medical physiology 23rd Edition page no.566)