Unknown All of the following is/are true regarding muscarinic action except: A Miosis B Detrusor muscle contraction C Dicyclomine is an antimuscarinic drug used for smooth muscle relaxation D Cardiac muscarinic receptors are predominantly M 3 type 💡 Explanation All of the following is/are true regarding muscarinic action except: ✓ Correct Answer: D. Cardiac muscarinic receptors are predominantly M 3 type