Filtration Rate concepts

[timeywimeystuff]

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Hi guys! I'm trying to wrap my head around the concept of filtration rate and how it relates to the kidneys.
Basically what I don't understand is why filtration rate is higher for smaller proteins. Is filtration rate a measure of the amount of fluid passing through a filter per unit time or is it a measure of the solute removed per unit time?

 

[monkeyvokes]

Hi guys! I'm trying to wrap my head around the concept of filtration rate and how it relates to the kidneys.
Basically what I don't understand is why filtration rate is higher for smaller proteins. Is filtration rate a measure of the amount of fluid passing through a filter per unit time or is it a measure of the solute removed per unit time?

I believe filtration rate could be discussed in the context of fluids or solutes.
And I would think smaller proteins would be more likely to slide through the filter.