Which of the following is incorrect about ultrafiltration?

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Podocytes are arranged in intricate manner so as to leave minute space called filtration slits and slit pore, filtration occurs finely through these pores.

Filtration is so fine that almost all the constituent of blood except protein pass onto the lumen of Bowman’s capsule.

Filtrated fluid is isotonic to blood plasma.

JGA controls the filtration rate of ultrafiltration.

answer is B.

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Detailed Solution

The epithelial cells of Bowman’s capsule called podocytes are arranged in an intricate manner so as to leave some minute spaces called filtration slits or slit pores. Blood is filtered so finely through these membranes, that almost all the constituents of the plasma except the proteins pass onto the lumen of the Bowman’s capsule. Therefore, it is considered as a process of ultra filtration. A fall in GFR can activate the JG cells to release renin which can stimulate the glomerular blood flow and thereby the GFR back to normal.

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