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Ascending limb of Henle’s loop is to w...

Ascending limb of Henle’s loop is ____________to water whereas the descending limb is___________to it.

Text Solution

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Ascending limb of Henle’s loop is impermeable to water, whereas the descending limb is permeable to it.
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Read the following statements and select the correct option Statement 1 : When the urine moves through the descending limb, it becomes hypertonic to blood plasma and as it passes through the ascending limb of Henl's loop it becomes hypotonic to blood plasma Statement 2 : The decending limb is permeable to sodium ions, while the ascending limb is impermeable to sodium ions

Assertion A: The renal fluid becomes increasingly concentrated when it flows down in the descending limb of loop of Henle towards the inner medulla but its concentration decreases in the ascending limb when it flows towards the cortex Reason R: The descending limb of the loop of Henle reabsorbs water, the ascending limb is impermeable to water but salts are reabsorbed

Knowledge Check

  • An U-tube is used to determine the specific gravity of oil that does not mix with water. First water is poured into a vertical limb of the tube and then oil. The free surface of water is at 21.2 cm from the bottom of the tube and that of oil is at 30.2 cm and the surface of seperation is at 12.5 cm from the bottom of the tube. The specific gravity of oil is

    A
    2.03
    B
    0.49
    C
    1.01
    D
    1.526

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    Assertion : In the descending limb of loop of Henle , the urine is hypertonic , while in ascending limb of loop of Henle , the urine is Hypotonic . Reason : Descending limb is impermeable to Na' while ascending limb is impermeable to H_(2)O

    Read the following statement and choose the correct option I. Asceding limb of Henle's loop is permeable to water II. Tubular cells secrete substance like H^(+), K^(+) and ammonia into filtrate III. There is maximum reabsorption in Henle's loop IV. Conditional reabsorption of Na^(+) occurs in DCT V. PCT helps in maintaining ionic balance of body fluids

    Henle’s loop plays an important role in concentrating the urine.

    The nephron is a hollow, convoluted tube of cells. It is engineered to concentrate urine by removing water at which of the following sites? I. Proximal convoluted tubule II. Descending limb of the loop of Henle III. Ascending limb of the loop of Henle

    Two narrow bores of diameters 3.00mm and 6.0mm are joined together to form a U-tube open at both ends. If the U-tube contains water, what is the difference in its levels in the two limbs of the tube? Surface tension of water at the temperature of the experiment is 7.3 times 10^-2 N m^-1 .Take the angle of contact to be zero and density to water to be 1.0 times 10^3 kg m^-3

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    A U-tube of uniform cross-section contains some water. When 4cm^(3) of water is poured into it, the water level rises by 1 cm in each arm of the tube. Now if 10cm^(3) of oil is poured through one of the limbs, the water level rises further by 2.2 cm in the other limb. Calculate the density of the oil.

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