Question
Explain RAAS (Renin Angiotensin Aldosterone System).
Answer :
Word Count : 248
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The Renin-Angiotensin-Aldosterone System (RAAS) is a crucial hormonal cascade in vertebrates that regulates blood pressure, fluid balance, and electrolyte homeostasis. It is primarily activated in response to low blood volume, low blood pressure, or decreased sodium concentration in the distal tubules of the kidney. The system begins with the release of renin, an enzyme secreted by the juxtaglomerular cells of the kidney in response to reduced perfusion, sympathetic stimulation, or decreased sodium chloride delivery to the macula densa. Renin acts on angiotensinogen, a glycoprotein produced by the liver, cleaving
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