In a healthy adult human being, on an average:
1.
about 25 – 30 mg of urea is excreted out per day
2.
125 ml per minute urine is produced
3.
about 200 L carbon dioxide is removed by the lungs per minute
4.
1100-1200 ml of blood is filtered by the kidneys per minute
Subtopic: Formation of Urine |
From NCERT
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Which part of the nephron plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid?
1. Proximal convoluted tubule
2. Ascending limb of Loop of Henle
3. Descending limb of Loop of Henle
4. Distal convoluted tubule
1. Proximal convoluted tubule
2. Ascending limb of Loop of Henle
3. Descending limb of Loop of Henle
4. Distal convoluted tubule
Subtopic: Nephron Part 1 | Nephron Part 2 |
58%
From NCERT
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Nitrogenous waste is excreted in the form of pellet or paste by:
| 1. | Pavo | 2. | Ornithorhynchus |
| 3. | Salamandra | 4. | Hippocampus |
Subtopic: Nitrogenous Excretory Products |
75%
From NCERT
NEET - 2022
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Which one of the following hormones reduces blood pressure?
1. Antidiuretic hormone
2. Atrial Natriuretic factor
3. Aldosterone
4. Angiotensin-II
Subtopic: Autoregulation of GFR |
84%
From NCERT
NEET - 2022
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Terrestrial adaptations necessitated the production of :
| 1. | Highly toxic nitrogenous wastes like urea and uric acid |
| 2. | Lesser toxic nitrogenous wastes like urea and uric acid |
| 3. | Lesser toxic nitrogenous wastes like ammonia and urea |
| 4. | Highly toxic nitrogenous wastes like ammonia and urea |
Subtopic: Nitrogenous Excretory Products |
86%
From NCERT
NEET - 2022
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Which of the following substance is/are maximally reabsorbed in PCT as well as maximally secreted in DCT?
(i) NH3
(ii) H+
(iii) K+
(iv) urea
(iv) \(\mathrm{HCO}_{3}^{-} \text {. }\)
1. (i), (ii), (iii)
2. (ii), (iii), (vi)
3. (ii), (iii), (iv)
4. (iii) only.
(i) NH3
(ii) H+
(iii) K+
(iv) urea
(iv) \(\mathrm{HCO}_{3}^{-} \text {. }\)
1. (i), (ii), (iii)
2. (ii), (iii), (vi)
3. (ii), (iii), (iv)
4. (iii) only.
Subtopic: Concentration of Urine: I | Concentration of Urine: II | Concentration of Urine |
From NCERT
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Proximal tubular function includes all of the following except?
1. Reabsorption of sodium and water
2. Reabsorption of \(\mathrm{HCO}_{3}^{-}\)
3. Reabsorption of urea.
4. Reabsorption of ammonia
1. Reabsorption of sodium and water
2. Reabsorption of \(\mathrm{HCO}_{3}^{-}\)
3. Reabsorption of urea.
4. Reabsorption of ammonia
Subtopic: Concentration of Urine: I | Concentration of Urine: II |
From NCERT
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In the following questions a statement of assertion (A) is followed by
a statement of reason (R).
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
A: Beer and alcohol are diuretic substances
R: They inhibit the release of ADH from the posterior lobe of pituitary
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3. If Assertion is true statement but Reason is false, then mark (3)
4. If both Assertion and Reason are false statements, then mark (4)
A: Beer and alcohol are diuretic substances
R: They inhibit the release of ADH from the posterior lobe of pituitary
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Human Kidney: Functions | Autoregulation of GFR |
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What is the mechanism for the filtration of blood within the nephron?
1. both active and passive secretion of ions, toxins, and NH3 into the tubule
2. high hydrostatic pressure of blood forcing water the small molecules out of the capillary.
3. the high osmolarity of the medulla that was created by active and passive transport of salt from the tubule and passive diffusion of urea from the collecting duct
4. a lower osmotic pressure in Bowman’s capsule compared to the osmotic pressure in the glomerulus.
1. both active and passive secretion of ions, toxins, and NH3 into the tubule
2. high hydrostatic pressure of blood forcing water the small molecules out of the capillary.
3. the high osmolarity of the medulla that was created by active and passive transport of salt from the tubule and passive diffusion of urea from the collecting duct
4. a lower osmotic pressure in Bowman’s capsule compared to the osmotic pressure in the glomerulus.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Concentration of Urine: I |
52%
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In the given combination of compound, select which are either completely secreted or reabsorbed during urine formation?
1. NH3, H+, inulin
2. \(\mathrm{HCO}_{3}^{-}\), glucose, K+
3. Na+, penicillin, urea
4. amino acid, \(\mathrm{HCO}_{3}^{-}, \mathrm{Na}^{+}\).
1. NH3, H+, inulin
2. \(\mathrm{HCO}_{3}^{-}\), glucose, K+
3. Na+, penicillin, urea
4. amino acid, \(\mathrm{HCO}_{3}^{-}, \mathrm{Na}^{+}\).
Subtopic: Concentration of Urine: I |
53%
From NCERT
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