Physiology Vasomotor reversal of dale is demonstrated by A Fall in blood pressure by high dose intravenous Ach B Increase in blood pressure following administration of IV propranolol C Fall in blood pressure by ganglionic blocker D Fall in blood pressure by adrenaline pretreated with phentolamine 💡 Explanation Vasomotor reversal of dale is demonstrated by ✓ Correct Answer: D. Fall in blood pressure by adrenaline pretreated with phentolamine