- 1(current)
Q. No.Which of the following statements is correct?
1. The descending limb of loop of Henle is impermeable to water.
2. The ascending limb of loop of Henle is permeable to water.
3. The descending limb of loop of Henle is permeable to electrolytes.
4. The ascending limb of loop of Henle is impermeable to water.
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The maximum amount of electrolytes and water (70-80%) from the glomerular filtrate is reabsorbed in which part of the nephron?
1. Ascending limb of loop of Henle
2. Distal convoluted tubule
3. Proximal convoluted tubule
4. Descending limb of loop of Henle
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | The distal tubule plays a key role in regulating the potassium ion concentration in body fluids. |
| Reason (R): | The distal tubule reabsorbs all potassium in the filtrate by active transport. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Match the parts of the nephron in Column I with function/feature in Column II and select the answer from the codes given:
| COLUMN I | COLUMN II | ||
| A. | PCT | a. | Maximum reabsorption of water and electrolytes |
| B. | Loop of Henle - descending limb | b. | Permeable to water but almost impermeable to electrolytes |
| C. | Loop of Henle - ascending limb | c. | Impermeable to water but permeable to electrolytes |
| D. | DCT | d. | Conditional reabsorption of Na+ and water |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | d | c |
| 3. | a | b | d | c |
| 4. | b | a | d | c |
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The Bowman's capsule and glomerulus constitute the:
| 1. Malpighian tubule | 2. Renal corpuscle |
| 3. Nephron | 4. Collecting system |
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- 1(current)
Q. No.
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