What Is the Renin-Angiotensin System?
The renin-angiotensin system is a group of related hormones that act together to regulate blood pressure. It is called a system because each part influences the other parts and all are necessary for the whole to function correctly. The renin-angiotensin system, working together with the kidneys, is the body’s most important long-term blood pressure regulation system. While short-term blood pressure changes are caused by a variety of factors, almost all long-term blood pressure adjustments are the responsibility of the kidneys and the renin-angiotensin system. How Does the Renin-Angiotensin System Work? The important members of the renin-angiotensin system are: • Renin • Angiotensin I • Angiotensin II • Angiotensin Converting Enzyme When the blood pressure drops for any reason, special cells in the kidney det