In the presence of vasopressin, the greatest fraction of filtered water is absorbed in 

1. Loop of Henle

2. Proximal convoluted tubule

3. distal convoluted tubule

4. collecting tubule

Subtopic:  Autoregulation of GFR |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Trimethylamine oxide is an excretory product in

1. fresh water teleosts

2. marine teleosts

3. marine invertebrate

4. none of these.

Subtopic:  Nitrogenous Excretory Products | Osmoregulation |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following are uricotelic animals?

1. Rohu and frog

2. Camel and frog 

3. Lizard and crow

4. Earthworm and eagle 

Subtopic:  Nitrogenous Excretory Products |
 77%
AIIMS - 2002
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NEET 2023 - Target Batch - Aryan Raj Singh
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A person passes much urine and drinks much water but his blood glucose level is normal.

This condition may be the result of:

1. A reduction in insulin secretion from pancreas

2. A reduction in vasopressin secretion from posterior pituitary.

3. A fall in the glucose concentration in urine

4. An increase in secretion of glucagon

Subtopic:  Autoregulation of GFR |
 68%
AIIMS - 2003
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

1. When water is not available camels do not produce urine but store urea in tissues.
2. Salmon fish excretes lot of stored salt through gill membrane when in fresh water.
3. Paramecium discharges concentrated salt solution by contractile vacuoles.
4. The body fluids of fresh water animals are  generally hypotonic to surrounding water.
Subtopic:  Nitrogenous Excretory Products | Osmoregulation |
AIIMS - 2005
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following is correct regarding the excretion?

1. Large amount of water from renal filtrate is reabsorbed in DCT and a less amount is reabsorbed by PCT.

2. The descending limb of loop of Henle is almost impermeable to salts.

3. Malpighian corpuscle is found in medulla region of kidney

4. The colour of urine is pale yellow and is slightly alkaline in nature.

Subtopic:  Formation of Urine |
 75%
From NCERT
AIIMS - 2011
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following is true for excretion in humans?

1. Glucose and amino acids are reabsorbed in PCT by simple diffusion.

2. DCT is permeable to water.

3. On average, 25-30 gm of urea is excreted out per day.

4. Maximum reabsorption occurs in the loop of Henle.

Subtopic:  Micturition Reflex |
 79%
From NCERT
AIIMS - 2013
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NEET 2023 - Target Batch - Aryan Raj Singh

Refer the given figure of nephron.

Identify A, B, C and D and select the correct option regarding them
1. A- A tuft of capillaries formed by afferent arteriole.
2. B-PCT-reabsorption of HCO3- and selective secretion of H+ and K+ occurs here.
3. C-DCT-almost all glucose, amino acids, water, Na+, K+ and uric acid are absorbed here.
4. D-collecting duct-extends from the cortex of the kidney to the inner parts of medulla. Large amount of water is secreted in this region.

Subtopic:  Nephron Part 2 |
 74%
From NCERT
AIIMS - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh

Which part of the nephrons is impermeable to water?
1. Proximal convoluted tubule
2. Distal convoluted tubule
3. Ascending limb of loop of Henle
4. Descending limb of loop of Henle

Subtopic:  Formation of Urine |
 83%
From NCERT
AIIMS - 2015
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

When kidney of a person is damaged, he/she invariably suffers fom anaemia because

(1) RBCs pass through the glomerulus

(2) Sufficient erythropoietin is not produced

(3) haemoglobin is not synthesised sufficiently

(4) Iron and viatmin B-12 are not able to bind to haemoglobin.

Subtopic:  Human Kidney: Functions |
 66%
AIIMS - 2015
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NEET 2023 - Target Batch - Aryan Raj Singh
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