Common medications called ?-blockers bind to G protein-linked receptors in heart muscles, blocking adrenaline. They are prescribed to patients with high blood pressure. Can you formulate a hypothesis on their mechanism of action? a. Adrenaline has a stimulatory effect on heart rate and blood pressure. ?-blockers are antagonistic to adrenaline and produces inhibitory effect. b. Adrenaline has both a stimulatory and an inhibitory effect on heart rate and blood pressure.? blockers bind to G- protein and stimulate the inhibitory effect of adrenaline. c. Adrenaline has an inhibitory effect on heart rate and blood pressure. ?-blockers have a synergistic effect along with adrenaline producing an inhibitory effect. d. Adrenaline has both a stimulatory and an inhibitory effect on heart rate and blood pressure. ?-blockers bind to G- protein and intervene with the inhibitory effect of adrenaline