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Q. No.
What would be true about the role of collecting duct in the concentration of urine by the kidneys?
I: Allows passage of small amounts of urea into the medullary interstitium
II: Large amounts of water could be reabsorbed from this part to produce a concentrated urine.
 
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
Subtopic:  Nephron Part 1 | Nephron Part 2 | Concentration of Urine |
 81%
From NCERT
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Consider the following statements:
I: Glomerulus is a tuft of capillaries formed by the efferent arteriole
II: Afferent arteriole forms the peritubular capillary network
III: Vasa recta is absent or highly reduced in juxtamedullary nephrons
 
1. Only III is correct
2. I is correct but II and III are incorrect
3. I, II and III are incorrect
4. I and II are correct
Subtopic:  Human Kidney: Location & Cut Section | Nephron Part 1 | Nephron Part 2 |
 63%
From NCERT
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Identify the part of the nephron that:
 
I: is lined by cuboidal brush bordered epithelium
II: reabsorbs 70-80 percent of electrolytes and water
 
1. Proximal convoluted tubule
2. Loop of Henle
3. Distal convoluted tubule
4. Collecting duct
Subtopic:  Nephron Part 1 | Nephron Part 2 |
 90%
From NCERT
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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
Subtopic:  Nephron Part 1 | Nephron Part 2 |
 85%

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Identify the incorrect statement:
1. Glomerulus is a tuft of capillaries formed by afferent arteriole.
2. Blood from the glomerulus is carried away by an efferent arteriole.
3. Vasa recta is well developed in cortical nephrons.
4. The DCTs of many nephrons open into a straight tube called collecting duct.
Subtopic:  Nephron Part 1 | Nephron Part 2 |
 88%
From NCERT
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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 filtrate gets concentrated as it moves down the descending limb of loop of Henle in the human nephron.
Reason (R): The descending limb of loop of Henle is impermeable to water but allows transport of electrolytes actively or passively.
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.
Subtopic:  Nephron Part 2 |
 74%
From NCERT
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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.
Subtopic:  Nephron Part 1 | Nephron Part 2 |

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