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

The largest amount of water leaves the body via which of the following routes?

feces

urine

sweat

exhaled air

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Verified step by step guidance

Understand the concept of water loss in the body: The human body loses water through various routes, including urine, feces, sweat, and exhaled air. Each route contributes differently to overall water loss.

Analyze the role of urine in water excretion: The kidneys regulate water balance by filtering blood and producing urine. Urine is the primary route for excreting excess water and waste products, making it the largest contributor to water loss.

Compare other routes of water loss: Feces contain a small amount of water, primarily for lubrication and waste elimination. Sweat is used for thermoregulation and contains water, but its contribution depends on activity level and environmental conditions. Exhaled air contains water vapor, but the amount is relatively small compared to urine.

Consider physiological mechanisms: The kidneys are highly efficient in maintaining homeostasis, and they adjust urine production based on hydration levels. This ensures that urine remains the dominant route for water loss under normal conditions.

Conclude based on evidence: Based on the physiological processes and the relative contributions of each route, urine is the correct answer as the largest amount of water leaves the body through this route.