Question

What organs produce what hormones in the renin-angiotensin system?  Finally, what is the role of these hormones?

Answer 1

Answer

Hormones in Renin-angiotensin-aldosterone system :

1) Kidney (Juxtaglomerular cells) ---- Renin

• Renin helps in conversion of angiotensinogen to angiotensin - I.

2) Liver --- Angiotensinogen

• Angiotensinogen is the precusor for hormone angiotensin. Renin acts on angiotensinogen to produce angiotensin - I.
• An enzyme called Angiotensin converting enzyme (ACE) is produced by lungs to convert angiotensin - I into angotensin-II.

3) Adrenal cortex (Zona glomerulosa) ---- Aldosterone

• Angotensin-II triggers release of aldosterone.
• Aldosterone acts on distal convoluted tubule of nephron and stimulate reabsorption of NaCl.