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

What is the primary function of the kidneys?

To regulate oxygen transport in the blood

To produce digestive enzymes

To filter waste products from the blood and form urine

To secrete insulin for blood sugar regulation

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Verified step by step guidance

Step 1: Begin by understanding the primary role of the kidneys in the human body. The kidneys are part of the urinary system and are responsible for maintaining homeostasis by filtering blood and removing waste products.

Step 2: Recall that the kidneys filter out waste products such as urea, creatinine, and excess ions from the blood. These waste products are then excreted in the form of urine.

Step 3: Eliminate incorrect options by analyzing their relevance to kidney function. For example, regulating oxygen transport in the blood is primarily the role of hemoglobin in red blood cells, not the kidneys.

Step 4: Similarly, producing digestive enzymes is a function of organs like the pancreas and salivary glands, not the kidneys. Insulin secretion for blood sugar regulation is also a function of the pancreas.

Step 5: Conclude that the correct answer is: 'To filter waste products from the blood and form urine,' as this aligns with the kidneys' primary physiological function.