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Q. No.During concentration of urine by human kidneys small amounts of urea enter the thin segment of the ascending limb of Henle’s loop which is transported back to the interstitium by the:
1. collecting tubule.
2. proximal convoluted tubule.
3. descending limb of loop of Henle.
4. descending limb of vasa recta.
Subtopic: Nephron Part 1 | Nephron Part 2 | Concentration of Urine |
73%
From NCERT
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The main function of aldosterone in Renin-Angiotensin mechanism is:
| 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. |
Subtopic: Autoregulation of GFR |
78%
From NCERT
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Sequentially arrange the passage of kidney filtrate
A. loop of Henle
B. glomerulus
C. proximal convoluted tubule
D. collecting duct
E. distal convoluted tubule
Choose the correct sequence answer from the options given below
1. A, B, D, E, C
2. A, E, C, D, B
3. B, C, E, A, D
4. B, C, A, E, D
A. loop of Henle
B. glomerulus
C. proximal convoluted tubule
D. collecting duct
E. distal convoluted tubule
Choose the correct sequence answer from the options given below
1. A, B, D, E, C
2. A, E, C, D, B
3. B, C, E, A, D
4. B, C, A, E, D
Subtopic: Formation of Urine |
83%
From NCERT
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Which of the following structure helps in excretion and conservation of water in terrestrial arthropods?
1. Malpighian body
2. Antennary gland
3. Malpighian tubules
4. Keber's organs
1. Malpighian body
2. Antennary gland
3. Malpighian tubules
4. Keber's organs
Subtopic: Nitrogenous Excretory Products |
74%
From NCERT
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Which one does not influences the activity of kidney?
1. Vasopressin
2. Angiotensin II
3. Aldosterone
4. Rennin
1. Vasopressin
2. Angiotensin II
3. Aldosterone
4. Rennin
Subtopic: Autoregulation of GFR |
65%
From NCERT
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Which of the following pair of hormones are antagonistic to each other?
1. Insulin and Aldosterone with respect to blood glucose level
2. Atrial natriuretic factor and Vasopressin with respect to blood pressure
3. Prolactin and Oxytocin with respect to milk secretion
4. Secretin and cholecytokinin with respect to bile juice secretion
1. Insulin and Aldosterone with respect to blood glucose level
2. Atrial natriuretic factor and Vasopressin with respect to blood pressure
3. Prolactin and Oxytocin with respect to milk secretion
4. Secretin and cholecytokinin with respect to bile juice secretion
Subtopic: Autoregulation of GFR |
85%
From NCERT
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\(\text {Angiotensinogen} \xrightarrow {\text x} \text {Angiotensin-I}\\ ~~~~~~~~~~(\text A)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~({\text B})\)
'X' in the given statement refers to
1. Angiotensin -II
2. Aldosterone
3. Renin
4. Rennin
Subtopic: Autoregulation of GFR |
82%
From NCERT
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The human kidneys can produce urine concentrated nearly:
1. two times than the initial filtrate formed.
2. four times than the initial filtrate formed.
3. six times than the initial filtrate formed.
4. eight times than the initial filtrate formed.
1. two times than the initial filtrate formed.
2. four times than the initial filtrate formed.
3. six times than the initial filtrate formed.
4. eight times than the initial filtrate formed.
Subtopic: Concentration of Urine |
94%
From NCERT
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Consider the given two statements regarding the mechanism of increasing medullary interstitium osmolarity when kidney is trying to produce concentrated urine:
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
| 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. |
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
Subtopic: Concentration of Urine |
83%
From NCERT
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A counter-current exists in the human kidneys between:
1. Only III is correct
2. Only I and II are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | the two limbs of Henle’s loop. |
| II: | the two limbs of vasa recta. |
| III: | the Henle’s loop and vasa recta. |
2. Only I and II are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Concentration of Urine |
63%
From NCERT
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