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

Why is the kidney referred to as an excretory organ?

Because it produces digestive enzymes for nutrient absorption

Because it removes metabolic wastes from the blood and excretes them in urine

Because it stores bile for fat digestion

Because it regulates oxygen transport in the blood

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Verified step by step guidance

Understand the primary function of the kidney: The kidney is part of the urinary system and plays a crucial role in filtering blood to remove metabolic wastes, excess ions, and toxins, which are excreted in the form of urine.

Eliminate incorrect options: The kidney does not produce digestive enzymes for nutrient absorption (this is a function of the pancreas and small intestine). Therefore, this option is incorrect.

Eliminate another incorrect option: The kidney does not store bile for fat digestion (this is a function of the gallbladder). Thus, this option is also incorrect.

Consider the role of oxygen transport: The kidney indirectly influences oxygen transport by producing erythropoietin, a hormone that stimulates red blood cell production. However, this is not its primary excretory function, so this option is not the best answer.

Select the correct answer: The kidney is referred to as an excretory organ because its primary function is to remove metabolic wastes from the blood and excrete them in urine.