Action of alpha 2 and b1 receptors on adenyl cyclase: (A) Stimulate; Stimulate, (B) Stimulate; Inhibit, (C) Inhibit; Inhibit, (D) Inhibit; Stimulate
Answer is D. 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.