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Excretory Products and their Elimination · Question 17

NEET (UG) 2019MCQHard📈 Topic in 0% papers+4−1
1

Use of an artificial kidney during hemodialysis may result in : Which of the following options is the most appropriate?

  1. C and D only
  2. A and D only
  3. A and B only
  4. B and C only

Answer

(1) C and D only

Solution

In haemodialysis, blood is passed through an artificial kidney (dialysing unit) where nitrogenous wastes such as urea and excess ions like K+ diffuse out into the dialysing fluid.

⇒ A and B are wrong, since waste build-up and retention of excess K+ are what dialysis removes.

The artificial kidney cannot perform the endocrine functions of the kidney:

⇒ As per NCERT, the JG cells of the kidney release erythropoietin, which stimulates RBC formation; its absence leads to reduced RBC production (D).

⇒ The kidney also forms the active form of vitamin D (calcitriol), needed for absorption of Ca2+ from the gut; its absence reduces calcium absorption (C).

∴ C and D are correct.

Answer: (1)

NEET (UG) 2019

Keep practising — Excretory Products and their Elimination

2

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
  3. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
  4. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
NEET 2018
3

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(iv), (b)-(v), (c)-(ii), (d)-(iii)
  3. (a)-(v), (b)-(iv), (c)-(i), (d)-(iii)
  4. (a)-(v), (b)-(iv), (c)-(i), (d)-(ii)
NEET 2018
4

A decrease in blood pressure/volume will not cause the release of

  1. atrial natriuretic factor
  2. aldosterone
  3. ADH
  4. renin
NEET 2017
5

Which of the following statements is correct?

  1. The descending limb of loop of Henle is impermeable to water
  2. The ascending limb of loop of Henle is permeable to water.
  3. The descending limb of loop of Henle is permeable to electrolytes.
  4. The ascending limb of loop of Henle is impermeable to water.
NEET 2017
6

In mammals, which blood vessel would normally carry largest amount of urea?

  1. Hepatic Vein
  2. Hepatic Portal Vein
  3. Renal Vein
  4. Dorsal Aorta
NEET 2016 (Phase 1)
7

The part of nephron involved in active reabsorption of sodium is

  1. distal convoluted tubule
  2. proximal convoluted tubule
  3. Bowman's capsule
  4. descending limb of Henle's loop
NEET 2016 (Phase 2)
8

Human urine is usually acidic because

  1. potassium and sodium exchange generates acidity
  2. hydrogen ions are actively secreted into the filtrate
  3. the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
  4. excreted plasma proteins are acidic
AIPMT 2015
9

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of -

  1. Urea
  2. Potassium urate
  3. Calcium carbonate
  4. Ammonia
AIPMT 2015
10

Which of the following does not favour the formation of large quantities of dilute urine?

  1. Renin
  2. Atrial natriuretic factor
  3. Alcohol
  4. Caffeine
AIPMT 2015 (Cancelled)
11

Removal of proximal convoluted tubule from the nephron will result in

  1. no change in quality and quantity of urine
  2. no urine formation
  3. more diluted urine
  4. more concentrated urine.
AIPMT 2015 (Cancelled)

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