Biology / Unit 13 Bio 3249 worked example, 60 to 90 seconds
Tracing Filtrate Through the Nephron, Worked
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The idea
This procedure traces one volume of blood plasma through a complete nephron cycle, drawing together this chapter's filtration, concentration, and hormonal atoms.
Where people slip
Assuming urine concentration is fixed by filtration alone is the error here — the collecting duct's hormonally controlled permeability, not the initial filtration step, is what determines the final concentration.
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