Renin-Angiotensin System(RAS): Understanding Its Role and Importance
The Renin-Angiotensin System(RAS), also known as the Renin-Angiotensin-Aldosterone System (RAAS), is a complex hormonal system that plays a crucial role in regulating blood pressure, fluid balance, and electrolyte homeostasis. It involves
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![Angiotensin II receptor blockers (ARBs) are a class of pharmaceuticals that selectively block the activation of angiotensin II type 1 receptors (AT1)[1]. These receptors mediate the effects of the renin-angiotensin system, which include arteriolar contraction and sodium retention[1]. By blocking AT1 receptors, ARBs lead to vasodilation, reduced vasopressin secretion, and decreased aldosterone production, ultimately lowering blood pressure[1]. ARBs are commonly known as angiotensin II receptor antagonists or AT~1~ receptor antagonists[1].](https://cdn.drstemcellsthailand.com/wp-content/uploads/2025/02/image-60.png)







