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Glomerular Filtration

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### Step-by-Step Solution for Glomerular Filtration 1. **Definition of Glomerular Filtration**: - Glomerular filtration is the first step in the process of urine formation. It involves the filtration of blood in the kidneys to remove waste products and excess substances. 2. **Location of Filtration**: - This process occurs in the glomerulus, which is a network of capillaries located within the Bowman's capsule of the nephron in the kidney. ...
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Assertion: Pregnant women may show some presence of glucose in their postprandial urine although they have no diabetes. Reason: In pregnant women the glomerular filtration rate is slightly increased. As a result the tubular load of glucose exceeds the tubular maximum for glucose reabsorption.

Complete the following paragraph by selecting the option that correctly fils the blanks (i)- (iv) The kidney have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i)._____ It is a special sensitive region formed by cellular modifications in the (ii)._________ and the (iii)._________ at the location of their contact. A fall in GFR can activate the JG cells to release (iv).________ which can stimulate the glomerular blood flow the thereby brings GFR back to normal

Knowledge Check

  • Read the following statements and choose the correct option (i) Glomerular filtration rate in a healthy individual is about 180 ml/day (ii) All constituents of plasma pass into lumen of Bowman's capsule (iii) 70 - 80% of electrolystes and water are absorbed in PCT (iv) Angiotensin II increases the glomerular blood pressure and GFR (v) Counter current system contribute in concentrating the filtrate

    A
    i and ii only are correct
    B
    v along is correct
    C
    ii, iii and iv are correct
    D
    iii, iv and v are correct

  • Which of the following statements about the glomerular filtration is CORRECT ? I. The hydrostatic pressure of blood in glomerular capillaries allows filtration. II. The diameter of the efferent arteriole is lesser than the diameter of the afferent arteriole. III. The fluid collected in the urinary space contains all constitution of blood except RBCs. IV. The net filtration pressure at the glomerulus is around 40 mm Hg.

    A
    I and III
    B
    II and IV
    C
    I and II
    D
    III and IV

  • Statement I : pregnant women may show presence of glucose in their postprandial urine although they have no diabetes. Statement II: In pregnant women, the glomerular filtration rate is slightly increased. As a result, the tubular load of glucose exceeds the tubular maximum for glucose reabsorption.

    A
    Both the statement are true
    B
    Both the statement are false
    C
    Statement I is true and Statement II is false
    D
    Statement I is true and Statement II is true

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    Glomerular filtrate is

    Which of the following statement is // are true ? I. Glomerular filtrate is isotonic to plasma. II. When the urine passes into collecting tubule , it becomes hypotonic. III. Filtrate is isotonic in proximal convoluted tubule. IV. Filtrate becomes more and more hypotonic as it passes through descending limb of Henle's loop. Choose the correct option :-

    Which of the following statement is/are true? I. Glomerular filtrate is isotonic to plasma. II. When the urine passes into collecting tubule, it becomes hypotonic. III. Filtrate is isotonic in proximal convoluted tu- bule. IV. Filtrate becomes more and more hypotonic as it passes through descending limb of Henle's loop. Choose the correct option :

    Glomerular filtrate is 1. formed continuously by the process of ultrafiltration occurring at Malpighian corpuscles, in which the blood cells and the colloidal macromolecules are not allowed to pass across the filtering surface 2. the electrolyte free fluid collected within the lumen of Bawman's capsule 3. the protein free fluid collected within the lumen of Bowman's capsule 4. formed by the process of selective reabsorption

    Which is absent in Glomerular filtrate

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