Arrange the following events occuring in Renin-Angiotensin mechanism in the correct order: A. Increase in blood pressure and Glomerular filtration rate B. Reabsorption of Na+ and water from distal parts of tubule due to Aldosterone C. Fall in Glomerular filtration rate D. Vasoconstriction by Angiotensin II and release of Aldosterone. E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II. Choose the correct answer from the options given below:
Answer: (D) C, E, D, B, A. Answer: (D) C, E, D, B, A.
- A.A, C, E, B, D
- B.C, A, B, D, E
- C.A, D, B, E, C
- D.C, E, D, B, A✓
Correct Answer
(D) C, E, D, B, A
Solution & Explanation
Answer: (D) C, E, D, B, A. Solution: The Renin-Angiotensin mechanism is triggered by a fall in glomerular blood pressure/GFR (C), which activates JG cells to release renin that converts angiotensinogen to angiotensin I and then angiotensin II (E). Angiotensin II, a powerful vasoconstrictor, raises glomerular pressure and activates the adrenal cortex to release aldosterone (D). Aldosterone then causes reabsorption of Na+ and water from the distal parts of the tubule (B), which leads to an increase in blood pressure and GFR (A). Correct order: C → E → D → B → A. NCERT Reference: Ch 16, p.212, line(s) 23-32 — "renin which converts angiotensinogen in blood to angiotensin I and further to angiotensin II"