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

The Kidneys

Anatomy & Physiology

25. The Urinary System

The Kidneys

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Multiple Choice

Which of the following is a function of the kidneys?

Digestion of proteins

Synthesis of bile

Regulation of blood pressure

Production of insulin

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Verified step by step guidance

Step 1: Understand the primary functions of the kidneys. The kidneys are vital organs responsible for filtering blood, removing waste products, balancing electrolytes, and regulating fluid levels in the body.

Step 2: Focus on the specific function mentioned in the problem: regulation of blood pressure. The kidneys regulate blood pressure through mechanisms such as the renin-angiotensin-aldosterone system (RAAS). Renin, an enzyme secreted by the kidneys, plays a key role in this process.

Step 3: Compare the other options provided in the problem. Digestion of proteins occurs in the stomach and small intestine, synthesis of bile occurs in the liver, and production of insulin occurs in the pancreas. These functions are not related to the kidneys.

Step 4: Recognize that the kidneys contribute to blood pressure regulation by controlling the volume of blood (via water retention or excretion) and releasing hormones like renin that influence vascular resistance.

Step 5: Conclude that the correct answer is 'Regulation of blood pressure,' as this is a well-established function of the kidneys, distinct from the functions of other organs listed in the options.