The term RAAS stands for the Renin-Angiotensin-Aldosterone System, which is not a single molecule or factor but rather a hormonal cascade involved in regulating blood pressure, fluid, and electrolyte balance.
Components of RAAS:
-Renin: An enzyme produced by the kidneys that initiates the cascade.
-Angiotensinogen: A liver-produced precursor protein that renin converts into angiotensin I.
-Angiotensin-Converting Enzyme (ACE): Converts angiotensin I into angiotensin II, the active peptide.
-Angiotensin II: A potent vasoconstrictor that also stimulates the secretion of aldosterone.
-Aldosterone: A hormone produced by the adrenal glands that increases sodium and water retention.
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