| I: | the two limbs of Henle’s loop. |
| II: | the two limbs of vasa recta. |
| III: | the Henle’s loop and vasa recta. |
| Statement I: | NaCl is transported by the ascending limb of Henle’s loop which is exchanged with the descending limb of vasa recta. |
| Statement II: | NaCl is returned to the interstitium by the ascending portion of vasa recta. |
| 1. | Statement I is correct: Statement II is incorrect |
| 2. | Statement I is incorrect: Statement II is correct |
| 3. | Statement I is correct: Statement II is correct |
| 4. | Statement I is incorrect: Statement II is incorrect |
| 1. | It converts angiotensinogen in blood to angiotensin I. |
| 2. | It is a powerful vasodilator. |
| 3. | It causes reabsorption of Na+ and water from the distal parts of the tubule. |
| 4. | It activate the JG cells to release rennin. |