<prompt> Which of the following cholinomimetics activates both muscarinic and nicotinic receptors?MethacholineBethanecholPilocarpineCarbachol  <response>: Carbachol is a parasympathomimetic that mimicks the effect of Ach on both muscarinic and nicotinic receptors. It is a synthetic choline ester where others act on muscarinic receotors only. 