formation of urine: a properly - rocky view...
TRANSCRIPT
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Formation of Urine: A Properly Working Kidney
Movie 1:50
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filtration
Secretion
Reab
sorptio
n (bac
k into blood
)
Cellular Processes(ATP)
(fine tuning)
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Filtration Amino acids UreaCreatine PhosphateGlucose Ions
Water
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Reabsorption
Amino acidsOther nutrients
Amino acids
UreaCreatine Phosphate
Glucose
IonsWater
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Secretion
Amino acids
Urea
Creatine Phosphate
Glucose
Ions
Water
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Formation of Urine involves three main processes:
1. Filtration - glomerulus and Bowman's capsule - all small molecules - nondiscriminate meaning good and bad leave blood plasma
2. Reabsorption - tubular system - PCT reabsorbs all valuable molecules; Loop of Henle reabsorbs water; DCT reabsorbs ions that the body requires because only bad molecules or excess molecules remain in tubular system, urine is forming and becoming more concentrated.
3. Secretion - DCT - if there are still waste products or excess products in the blood that need to be removed, these molecules can be secreted from the blood INTO the DCT for excretion.
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Conc
entration of Urin
e mol/L
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OTHER CELLULAR WASTES
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