Composition of Urine Components Quiz

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Questions and Answers

What is the primary component of urine?

Creatinine
Sodium ions
Water (correct)
Urea

Which compound is present in urine at a concentration of around 7-8 grams per liter?

Urea (correct)
Chloride ions
Sodium ions
Magnesium ions

Which of the following is NOT a component of urine according to the text?

Enzymes
Glucose
Vitamin C
Sodium ions (correct)

At what approximate concentration are phosphate ions present in urine?

<p>0.1 milliequivalents per liter (D)</p> Signup and view all the answers

What is the approximate concentration of potassium ions in urine?

<p>0.1 milliequivalents per liter (A)</p> Signup and view all the answers

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Study Notes

Urine is primarily composed of water, with various dissolved salts and organic compounds. Here's a breakdown of the components and their respective percentages:

Water: around 95%
Urea: about 7-8 grams per liter
Creatinine: from 0.1 to 1 gram per liter
Chloride ions: 3-4 milliequivalents per liter
Sodium ions: 1-2 milliequivalents per liter
Calcium ions: 0.1 milliequivalents per liter
Magnesium ions: 0.1 milliequivalents per liter
Phosphate ions: 0.1 milliequivalents per liter
Potassium ions: 0.1 milliequivalents per liter
Sulfates ions: 0.1 milliequivalents per liter

Urine also contains small amounts of glucose, uric acid, caffeine, vitamin C, leukocytes, enzymes, proteins, lipids, bilirubin, bile acids, steroids, pigments, hormones, and prostate antigens.