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Questions and Answers
What substance has the highest concentration in the blood?
What substance has the highest concentration in the blood?
Blood plasma
What substance has the lowest concentration in the blood?
What substance has the lowest concentration in the blood?
Blood vessel
What substance has the highest concentration in the urine?
What substance has the highest concentration in the urine?
Urea
What substance has the lowest concentration in the urine?
What substance has the lowest concentration in the urine?
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Study Notes
Blood Composition
- The highest concentration substance in blood is blood plasma, which significantly contributes to overall blood volume and composition.
Urine Composition
- Urea has the highest concentration in urine, making up over 50% of solid constituents.
- On an elemental level, human urine contains:
- 6.87 g/L carbon
- 8.12 g/L nitrogen
- 8.25 g/L oxygen
- 1.51 g/L hydrogen
Urine Characteristics
- Urine is primarily composed of more than 95% water.
- Urea concentration in urine is around 9.3 g/L, indicating its importance as a metabolic waste product.
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