Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

25. The Urinary System

Introduction to the Urinary System

Anatomy & Physiology

25. The Urinary System

Introduction to the Urinary System

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Multiple Choice

Which of the following is the most abundant waste solute in urine?

Urea

Creatinine

Glucose

Uric acid

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Verified step by step guidance

Understand the composition of urine: Urine is primarily composed of water, but it also contains various waste solutes that are excreted by the kidneys. These solutes include urea, creatinine, uric acid, and other substances.

Learn about urea: Urea is a nitrogenous waste product formed during the breakdown of proteins and amino acids in the liver. It is transported to the kidneys via the bloodstream and excreted in urine. Urea is the most abundant waste solute in urine.

Compare urea with other options: Creatinine is a waste product of muscle metabolism and is excreted in urine, but it is present in smaller amounts compared to urea. Glucose is typically reabsorbed by the kidneys and is not a waste solute unless there is a pathological condition like diabetes. Uric acid is a waste product of purine metabolism, but it is less abundant than urea in urine.

Recognize the physiological significance: The kidneys play a crucial role in filtering blood and excreting waste products like urea. Urea concentration in urine reflects the body's protein metabolism and kidney function.

Conclude based on the information: Urea is the most abundant waste solute in urine due to its role in nitrogen excretion and its high concentration compared to other waste products like creatinine, glucose, and uric acid.