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Q. No.A combination of flame cell and a tube cell, a protonephridium, is the osmoregulatory and excretory structure in:
1.
Platyhelminthes
2.
Annelids
3.
Aschelminthes
4.
Echinoderms
Subtopic: Nitrogenous Excretory Products |
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In humans, urea is produced in the:
1. liver and eliminated by the kidneys
2. kidneys and eliminated by the kidneys
3. liver and eliminated by the intestines
4. intestines and eliminated by the kidneys
1. liver and eliminated by the kidneys
2. kidneys and eliminated by the kidneys
3. liver and eliminated by the intestines
4. intestines and eliminated by the kidneys
Subtopic: Disorders of Excretory System |
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Consider the given two statements:
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: | The right kidney is located slightly lower than the left kidney. |
| II: | The average weight of human kidney varies between 120 g and 170 g. |
2. Only II is correct
3. Neither I nor II are correct
4. Both I and II are correct
Subtopic: Human Kidney: Location & Cut Section |
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The glomerular filtrate, under normal physiological conditions, should not contain any:
| 1. | Sodium | 2. | Urea |
| 3. | Proteins | 4. | Glucose |
Subtopic: Formation of Urine |
71%
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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%
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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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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
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%
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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%
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