<Li> Agonists as having Intrinsic Activity = 1 </Li> <Li> Antagonists as having Intrinsic Activity = 0 </Li> <Li> and, Partial Agonist as having Intrinsic Activity between 0 and 1 </Li> <Li> Intrinsic Efficacy also measures the different activated state of receptors, and the ability for a drug to cause maximum response without having to bind to all the receptors . </Li>

Where is the action of each drug taking place