Question

1. Which of the following is true about angiotensin II?

   1. ) Acts in collecting duct

   2. ) Vasoconstrictor

   3. ) Directly promotes water reabsorption

   4. ) 1 and 3

   5. ) 2 and 3

2. Which of the following is true about aldosterone?

   1. ) Vasoconstrictor

   2. ) Increases blood pressure

   3. ) Indirectly increases blood pressure

   4. ) 1 and 3

   5. ) 2 and 3

3. Which of the following is true about aldosterone?

   1. ) Acts in collecting duct

   2. ) Vasoconstrictor

   3. ) Directly promotes water reabsorption

   4. ) 1 and 3

   5. ) 2 and 3

4. Which of the following is true about angiotensin II?

   1. ) Vasoconstrictor

   2. ) Increases water reabsorption

   3. ) Increases blood pressure

   4. ) 1 and 3

   5. ) 2 and 3

Answer 1

1. Vasoconstrictor

Explanation- angiotensin II cause the release of aldosterone from adrenal cortex,which increase sodium and water reabsorption. Therefore it indirectly promotes water reabsorption. It is a potent vasoconstrictor.

2. Increases blood pressure

Explanation- aldosterone causes reabsorption of sodium and water from collecting duct and thus increases the blood volume, which increases blood pressure.

3. 1 and 3

Explanation- it acts on collecting duct and directly increases blood pressure

4. 1 and 3

Explanation- it is a vasoconstrictor. And since it is not mentioned here directly or indirectly, therefore option 3 is correct. Option 2 is incorrect because it stimulates aldosterone to cause water reabsorption.