- 1(current)
Q. No.Malpighian body or the renal corpuscle is made up of:
1. Glomerular capillaries and PTCN
2. Bowman's capsule and renal tubules
3. Afferent and efferent arterioles
4. Glomerular capillaries and Bowman's capsule
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Glomerular capillaries are drained by:
| 1. | efferent arteriole | 2. | afferent arteriole |
| 3. | vasa recta | 4. | peritubular capillary network |
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Figure shows human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and / or functions.
| 1. | B-pelvis - broad funnel shaped space inner to hilum, directly connected to loops of Henle. |
| 2. | C- Medulla- inner zone of kidney and contains complex nephrons. |
| 3. | D- Cortex- outer part of kidney and does not contain any part of nephrons. |
| 4. | A- Adrenal gland- located at the anterior part of kidney; secretes catecholamines which stimulate glycogen breakdown. |
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All of the following regarding juxtamedullary nephrons in human kidneys are correct except:
1. the entire nephron is located in the superficial cortex of the kidney
2. the renal corpuscle comprises a glomerulus and a glomerular capsule
3. blood arrives at the glomerular capillaries via an afferent arteriole
4. the proximal convoluted tubule leads into a long nephron loop
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| Assertion (A): | Juxtamedullary nephrons are key adaptation for water conservation in mammals. |
| Reason (R): | Juxtamedullary nephrons constitute about 85% of all nephrons in the mammalian kidney. |
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. |
10 to 15 distinct conical or triangular structures in the human kidney are seen in renal ______ and are known as renal ____________.
| 1. | pelvis; calyces | 2. | medulla; pyramids |
| 3. | cortex; columns of Bertini | 4. | cortex; lobes |
| I: | Each kidney of an adult human measures 10-12 cm in length, 5-7 cm in width and 2-3 cm in thickness. |
| II: | The DCTs of many nephrons open into a straight tube called collecting duct. |
| III: | Each nephron has two parts – the glomerulus and the renal tubule. |
| IV: | The renal tubule begins with the proximal convoluted tubule. |
| 1. | Only I and II | 2. | Only I, II and III |
| 3. | Only II and III | 4. | I, II, III and IV |
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I: Formation of urine
II: Regulation of erythropoiesis
III: Regulation of calcium levels in body fluids
| 1. | Only I | 2. | Only I and II |
| 3. | Only II and III | 4. | I, II and III |
I: Vasa recta is absent or highly reduced in cortical nephrons.
II: Efferent arteriole forms a peritubular capillary network around renal tubules.
1. I is correct but II is incorrect
2. I is incorrect but II is correct
3. I is correct and II is also correct
4. I is incorrect and II is also incorrect
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The urine concentrating ability of mammals and birds is correlated with the length of their:
| 1. | ureters | 2. | proximal convoluted tubules |
| 3. | distal convoluted tubules | 4. | loops of Henle |
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- 1(current)
Q. No.
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