Renin Angiotensin Aldosterone System is one of the most important systems of the body and has great importance with respect to Cardiovascular pharmacology. In this video the topic is efficiently explained. TIMELINE: 0:00 Introduction 0:10 Overview of RAAS 0:32 How RAAS Works? 1:46 Effects of angiotensin 1 on blood vessels 2:20 Effects of angiotensin 2 on kidney 2:29 Direct mechanism explained 3:02 Indirect effect explained 3:42 Summary with example