- 1(current)
Q. No.Consider the given two statements:
| Assertion (A): | Atrial Natriuretic Factor (ANF) mechanism acts as a check on the renin-angiotensin mechanism. |
| Reason (R): | An increase in blood flow to the atria of the heart can cause the release of ANF. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Autoregulation of GFR |
From NCERT
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Angiotensin II:
A: is a powerful vasodilator.
B: stimulates adrenal medulla to secrete aldosterone.
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
A: is a powerful vasodilator.
B: stimulates adrenal medulla to secrete aldosterone.
1. Only A
2. Only B
3. Both A and B
4. Neither A nor B
Subtopic: Â Autoregulation of GFR |
From NCERT
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Identify the incorrect statement regarding antidiuretic hormone (ADH):
| 1. | It is synthesized by the neurons of the hypothalamus and stored and released from the neurohypophysis. |
| 2. | It binds to receptors on the collecting duct cells and activates a cAMP second messenger system. |
| 3. | It is released during body dehydration conditions and acts on the collecting duct. |
| 4. | ADH is released when osmoreceptors in the hypothalamus sense a decrease in the blood osmolality. |
Subtopic: Â Autoregulation of GFR |
From NCERT
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Consider the two statements:
| Assertion (A): | An excess of aldosterone can cause a decrease in potassium ion concentration in body fluids. |
| Reason (R): | Aldosterone acts mainly at the renal tubules and stimulates the reabsorption of Na+ and water. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are False. |
| 4. | Both (A) and (R) are True and (R) correctly explains (A). |
Subtopic: Â Autoregulation of GFR |
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From NCERT
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