Pharmacology Autonomic nervous system 0b74c868 Action of alpha 2 and b1 receptors on adenyl cyclase A Stimulate; Stimulate B Stimulate; Inhibit C Inhibit; Inhibit D Inhibit; Stimulate High-Yield Explanation Beta receptors are GsPCR -so increase adenyl cyclase activity.alpha 1 -g1 pcr,alpha 2 GiPCR-decrease adenyl cyclase activity Ref: KD Tripathi 8th ed.