Table of contents

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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 kidneys are each about the size of which of the following?

A golf ball

A bar of soap

A tennis ball

A loaf of bread

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Verified step by step guidance

Step 1: Begin by understanding the anatomical size and shape of the kidneys. The kidneys are bean-shaped organs located in the retroperitoneal space of the abdominal cavity.

Step 2: Compare the approximate dimensions of the kidneys to the objects listed in the options. The kidneys are typically about 10-12 cm in length, 5-7 cm in width, and 2-3 cm in thickness.

Step 3: Evaluate the size of each object in the options. For example, a golf ball is much smaller than the kidneys, while a loaf of bread is significantly larger.

Step 4: Consider the option 'A bar of soap,' which closely matches the size and shape of the kidneys. A standard bar of soap is similar in length, width, and thickness to the kidneys.

Step 5: Conclude that the correct answer is 'A bar of soap,' as it most accurately represents the size of the kidneys compared to the other options provided.