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Excretory Products and their Elimination

AIPMT 2005MCQMediumNot asked in last 5 yrs+4−1
Ques. 1AIPMT 2005

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

  1. 50 mm Hg
  2. 75 mm Hg
  3. 20 mm Hg
  4. 30 mm Hg

Answer

(3) 20 mm Hg

Solution

As per NCERT, the blood pressure in the glomerular capillaries causes filtration of blood through the filtration membrane into Bowman's capsule.

This pressure is opposed by the colloidal osmotic pressure of plasma proteins and the hydrostatic pressure of the fluid in the capsule.

Glomerular hydrostatic pressure (GHP) ≈ 70 mm Hg

Blood colloidal osmotic pressure (BCOP) ≈ 30 mm Hg

Capsular hydrostatic pressure (CHP) ≈ 20 mm Hg

⇒ Net filtration pressure = GHP - (BCOP + CHP)

= 70 - (30 + 20)

= 20 mm Hg

Answer: (3)

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Ques. 2AIPMT 2005

A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of

  1. fats
  2. amino acids
  3. glucose
  4. ketones.
Ques. 3AIPMT 2004

Uricotelism is found in

  1. mammals and birds
  2. fish and fresh water protozoans
  3. birds, land reptiles and insects
  4. frogs and toads
Ques. 4AIPMT 2003

If Henle's loop were absent from mammalian nephron, which one of the following is to be expected?

  1. There will be no urine formation.
  2. There will be hardly any change in the quality and quantity of urine formed.
  3. The urine will be more concentrated.
  4. The urine will be more dilute.
Ques. 5AIPMT 2000

Conversion of ammonia to urea is done by

  1. ornithine cycle
  2. arginine cycle
  3. fumaric cycle
  4. citrulline cycle
Ques. 6AIPMT 2000

Concentration of urine depends upon which organ?

  1. Bowman's capsule
  2. Length of Henle's loop
  3. PCT
  4. Network of capillaries arising from glomerulus
Ques. 7AIPMT 2000

Which pair is correct?

  1. Sebum = sexual attraction
  2. Saliva = sense of food taste
  3. Sweat = temperature regulation
  4. Humerus = Hind leg

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