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 Heart2h 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

1. Introduction to Anatomy & Physiology

Organization of the Body: Thoracic Cavity

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Organization of the Body: Thoracic Cavity

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Multiple Choice

How does the structure of the pleurae aid in their function?

Serous fluid reduces friction.

Rigid shape gives structure to the flexible lungs.

Large surface area helps gas diffuse.

A & C are correct.

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Verified step by step guidance

Understand the anatomy of the pleurae: The pleurae are two thin layers of tissue that surround the lungs. The visceral pleura covers the lungs themselves, while the parietal pleura lines the chest cavity.

Explore the function of serous fluid: The pleurae produce serous fluid, which fills the pleural cavity between the visceral and parietal layers. This fluid acts as a lubricant, reducing friction between the lungs and the chest wall during breathing.

Consider the structural benefits: The pleurae's rigid shape provides structural support to the lungs, allowing them to expand and contract efficiently while maintaining their shape.

Examine the role of surface area: The pleurae's large surface area is crucial for efficient gas exchange. It allows for a greater area over which oxygen and carbon dioxide can diffuse between the lungs and the blood.

Combine the concepts: Recognize that both the reduction of friction by serous fluid and the large surface area for gas diffusion are essential functions of the pleurae, supporting the answer that both A and C are correct.