For filtration to occur, blood osmotic pressure + capsular hydrostatic pressure must be less than blood hydrostatic pressure + capsular osmotic pressure.

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Quizplus · Accepted Answer

Filtration occurs when there is a pressure gradient favoring movement of fluids out of the glomerulus and into the Bowman's capsule. This pressure gradient is determined by the difference between blood hydrostatic pressure and capsular osmotic pressure (favoring filtration) and the sum of blood osmotic pressure and capsular hydrostatic pressure (opposing filtration). Therefore, blood osmotic pressure + capsular hydrostatic pressure must be less than blood hydrostatic pressure + capsular osmotic pressure for filtration to occur.

For Filtration to Occur, Blood Osmotic Pressure + Capsular Hydrostatic