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Q. No.Renin is secreted by:
1. the macula densa of the DCT
2. the JG cells of the afferent arteriole
3. podocytes of Bowman’s capsule
4. hepatocytes
Subtopic: Formation of Urine |
90%
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Juxtamedullary nephrons:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | have a long loop of Henle which penetrates deeply into the renal medulla |
| II: | have their loop of Henle surrounded by the vasa recta |
| III: | comprise only about 15% of the nephrons in the human kidney |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Human Kidney: Location & Cut Section |
81%
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Identify the correct statements regarding nephrons in human kidney:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | There are nearly one million nephrons in each kidney. |
| II: | The Malpighian corpuscle, PCT and DCT of the nephron are located in the renal medulla. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Nephron Part 1 |
71%
From NCERT
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Identify the correct statements regarding the absorptive capabilities of the limbs of loop of Henle in human kidneys:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Descending limb is impermeable to water. |
| II: | Ascending limb is impermeable to electrolytes. |
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Nephron Part 1 |
82%
From NCERT
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| Assertion(A): | Urea can be used to maintain osmolarity of body fluids. |
| Reason(R): | Urea is more toxic and energetically less expensive than ammonia. |
| 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. | (A) is False and (R) is True. |
Subtopic: Nitrogenous Excretory Products |
78%
From NCERT
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| Assertion(A): | In hemodialysis, heparin is added to the blood taken out of the body for purification. |
| Reason(R): | Heparin is an anti-coagulant. |
| 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. | (A) is False and (R) is True. |
Subtopic: CRF & Hemodialysis |
78%
From NCERT
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How many of the given statements are correct?
1. 1
2. 2
3. 3
4. 4
| I: | Protonephridia are primarily concerned with ionic and fluid volume regulation, i.e., osmoregulation. |
| II: | Nephridia are the tubular excretory structures of earthworms and other annelids. |
| III: | Malpighian tubules are the excretory structures of most of the insects including cockroaches. |
| IV: | Antennal glands or green glands perform the excretory function in crustaceans like prawns. |
2. 2
3. 3
4. 4
Subtopic: Nitrogenous Excretory Products |
87%
From NCERT
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Consider the given two statements:
| Statement I: | An increase in blood flow to the atria of the heart can cause the release of Atrial Natriuretic Factor (ANF). |
| Statement II: | A fall in glomerular blood flow/glomerular blood pressure/GFR can activate the JG cells to release renin. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Autoregulation of GFR |
90%
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What type of epithelium lines the proximal convoluted tubules of a human nephron?
1. Simple squamous
2. Simple cuboidal brush bordered
3. Simple columnar brush bordered
4. Simple columnar ciliated
1. Simple squamous
2. Simple cuboidal brush bordered
3. Simple columnar brush bordered
4. Simple columnar ciliated
Subtopic: Nephron Part 1 | Nephron Part 2 |
89%
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The glomerular filtration rate:
1. Only I is correct
2. Only II is correct
3. Neither I nor II are correct
4. Both I and II are correct
| I: | is the volume of plasma that is filtered by the glomeruli per unit of time. |
| II: | is estimated to be about 125 ml/day. |
2. Only II is correct
3. Neither I nor II are correct
4. Both I and II are correct
Subtopic: Formation of Urine |
54%
From NCERT
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