Which one is an important constituent of the renin - angiotensinogen - aldosterone system?
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Introduction
The renin–angiotensin–aldosterone system (RAAS) is a critical regulator of blood volume and systemic vascular resistance. While the baroreceptor reflex responds in a short-term manner to decreased arterial pressure, the RAAS is responsible for more chronic alterations. It is composed of three major compounds: renin, angiotensin II, and aldosterone. These three act to elevate arterial pressure in response to decreased renal blood pressure, decreased salt delivery to the distal convoluted tubule, and/or beta-agonism. Through these mechanisms, the body can elevate the blood pressure in a prolonged manner.[1][2][3]
Organ Systems Involved
The RAAS involves the kidneys, lungs, systemic vasculature, and the brain.
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