Vasomotor reversal of dale is demonstrated by
Ans. (d) Fall in blood pressure by adrenaline pretreated with phentolamine(Ref: Ganong, 25th ed/p.353)If the subject is given a blocker and then if epinephrine is injected, vasodilation and decrease in BP is seen. This effect is called "Vasomotor reversal of Dale"
Fall in blood pressure by high dose intravenous Ach
Increase in blood pressure following administration of IV propranolol
Fall in blood pressure by ganglionic blocker
Fall in blood pressure by adrenaline pretreated with phentolamine
Endocrinology and Reproduction