Excretory Products And Their Elimination — DPP 3

20 NEET questions from Excretory Products And Their Elimination, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

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1
Urine formed by the nephrons is ultimately carried to the urinary bladder where it is stored till a voluntary signal is given by the;
  1. A CNS
  2. B PNS
  3. C ANS
  4. D Endocrine system
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Correct answer: A

2
In which part of excretory system of mammals you can use the term "urine"?
  1. A Bowman's capsule
  2. B Loop of Henle
  3. C Collecting tubule
  4. D PCT
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Correct answer: C

3
Which factor helps in maintaining an increasing osmolarity towards the inner medullary interstitium?
A. Counter current pattern in vasa recta
B. Counter current pattern in Henle's loop
C. Proximity between the Henle's loop and vasa recta
  1. A A and B only
  2. B A, B and C
  3. C C only
  4. D A and C only
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Correct answer: B

4
Which is the best adapted phenomenon for conservation of water?
  1. A Ammonotelism
  2. B Ureotelism
  3. C Uricotelism
  4. D Aminotelism
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Correct answer: C

5
Although specific parts of nephron may perform various functions but in the following statements most important function of the particular segment is given. Identify which segment of nephron is not related with its most important function?
  1. A PCT: Increases surface area for reabsorption
  2. B LOH: Absorption of some water and salts
  3. C DCT: Conditional reabsorption of sodium
  4. D CD (Collecting ducts): Dilution of urine
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Correct answer: D

6
JGA is a special sensitive region formed by cellular modifications in the;
  1. A DCT and afferent arteriole at the location of their contact.
  2. B DCT and efferent arteriole at the location of their contact.
  3. C PCT and afferent arteriole at the location of their contact.
  4. D PCT and efferent arteriole at the location of their contact.
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Correct answer: A

7
Blood plasma contains proteins but glomerular filtrate does not. Why does this difference in composition occur?
  1. A Blood osmotic pressure is maintained by the presence of plasma proteins.
  2. B Proteins are actively transported from the kidney tubule back into the blood capillaries.
  3. C Proteins cannot pass through the membranes of the glomerular capillaries.
  4. D There is a high hydrostatic pressure in the blood within the glomerular capillaries.
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Correct answer: C

8
Kidneys are situated close to the dorsal inner wall of the abdominal cavity between the;
  1. A last thoracic and second lumbar vertebra.
  2. B $\mathrm{T}_{12}$ and $\mathrm{L}_{3}$ vertebra.
  3. C last thoracic and third lumbar vertebra.
  4. D Both (2) and (3)
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Correct answer: D

9
What is the osmolarity (in $\mathrm{mOsmolL}^{-1}$) in the outer cortex and inner medulla region?
  1. A 300 and 900 respectively
  2. B 600 and 300 respectively
  3. C 1200 and 300 respectively
  4. D 300 and 1200 respectively
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Correct answer: D

10
A secretion that provides a protective oily covering for the skin is;
  1. A Sterols, hydrocarbons and waxes
  2. B Sweat
  3. C Sebum
  4. D Both (1) and (3)
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Correct answer: D

11
Major form of nitrogenous wastes excreted by the animals is/are;
  1. A $\mathrm{NH}_{3}$
  2. B Urea
  3. C Uric acid
  4. D All of these
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Correct answer: D

12
A large quantity of ________ is removed from our body by lungs.
  1. A $\mathrm{CO}_{2}$
  2. B $\mathrm{H}_{2} \mathrm{O}$ only
  3. C urea
  4. D ammonia
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Correct answer: A

13
Value of GFR is 125 ml/min. What does it mean?
  1. A 125 ml is the amount of urine formed in 1 minute.
  2. B 125 ml is the amount of nephric filtrate formed per minute by 1 nephron.
  3. C 125 ml is the amount of nephric filtrate formed per minute by 1 kidney.
  4. D 125 ml is the amount of nephric filtrate formed per minute by both kidneys.
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Correct answer: D

14
Workers in deep mines usually suffer from dehydration because;
  1. A water is lost due to evaporation.
  2. B water is lost due to defaccation.
  3. C water is lost in the form of urine.
  4. D water is lost along with salts in the form of sweat.
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Correct answer: D

15
Which of the following step in urine formation helps in the maintenance of ionic and acid base balance of body fluids?
  1. A Tubular secretion
  2. B Ultrafiltration
  3. C Reabsorption
  4. D Both (1) and (2)
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Correct answer: A

16
A man has taken large amount of protein in his diet. He will excrete more of;
  1. A Urea
  2. B Uric acid
  3. C Sugar
  4. D Salts and water
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Correct answer: A

17
Which one of the following is also known as antidiuretic hormone?
  1. A Oxytocin
  2. B Vasopressin
  3. C Adrenaline
  4. D Calcitonin
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Correct answer: B

18
Kidneys not only remove the waste products from the blood but also plays a very important role in maintaining;
  1. A constant composition of the blood irrespective of the nature of the food or fluid intake.
  2. B constant heart beat.
  3. C temperature of the body.
  4. D equilibrium of the body.
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Correct answer: A

19
Proximal convoluted tubule (PCT) is lined with;
  1. A Squamous epithelium
  2. B Compound brush border epithelium
  3. C Simple cuboidal brush border epithelium
  4. D Columnar epithelium
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Correct answer: C

20
Which one of the following is totally reabsorbed in renal tubules?
  1. A $\mathrm{Na}^{+}$ion
  2. B $\mathrm{K}^{+}$ion
  3. C $\mathrm{H}_{2} \mathrm{O}$
  4. D $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$
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Correct answer: D

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