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

Urine is produced by which of the following processes?

Filtration in the kidneys

Absorption in the intestines

Respiration in the lungs

Secretion by the liver

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Verified step by step guidance

Understand the primary function of the kidneys: The kidneys are responsible for filtering blood to remove waste products and excess substances, producing urine as a result. This process is known as filtration.

Eliminate incorrect options based on organ functions: Absorption in the intestines refers to the uptake of nutrients from digested food, which is unrelated to urine production. Respiration in the lungs involves gas exchange (oxygen and carbon dioxide), and secretion by the liver pertains to bile production and detoxification, neither of which produce urine.

Focus on filtration in the kidneys: Filtration occurs in the nephrons, the functional units of the kidneys. Blood enters the glomerulus, where water, ions, and waste products are filtered out into the Bowman's capsule, initiating urine formation.

Recognize the role of other processes in urine formation: While filtration is the first step, reabsorption and secretion also occur in the nephron to refine the composition of urine. However, filtration is the process directly responsible for initiating urine production.

Select the correct answer: Based on the explanation above, filtration in the kidneys is the correct process responsible for urine production.