This lesson contains 37 slides, with interactive quizzes, text slides and 2 videos.
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Per minuut stroomt er ruim 1 liter bloed door de nieren.
Hart --> aorta -->
nierslagader --> kleinere nierslagader --> haarvaten rond de nierbuisjes (VASA RECTA) --> kleinere nierader --> nierader -->
onderste holle ader --> Hart
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In iedere nefron vinden twee processen plaats:
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Het bloedplasma wordt vanuit de haarvaten naar het nierkapseltje geperst.
De vloeistof die in de nierkapseltjes komt heet voorurine.
Per etmaal wordt er ongeveer 180 liter voorurine gemaakt.
De hoeveelheid urine die wordt uitgescheiden bedraagt 1.5 liter.
Er moet dus 178.5 liter voorurine worden teruggeresorbeerd.
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In de voorurine zitten veel nuttige stoffen:
Deze stoffen worden vanuit het nefron teruggebracht naar het bloed. Dit heet terugresorptie.
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