NCLEX Prep: The Renin Angiotensin Aldosterone System

How in the heck do ACE Inhibitors and Angiotensin receptor blockers work? What if I told you you can predict their actions on the body 😏 (I didnt know what emoji to use and this seemed like the most appropriate one).
BTW: Patient taking ACEi starts to cough? Anticipate a switch to an ARB. Your welcome 😏
😏