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

22. The Respiratory System

Introduction to Lung Physiology

Anatomy & Physiology

22. The Respiratory System

Introduction to Lung Physiology

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Multiple Choice

Which of the following statements concerning the lungs and the pleura is true?

The pleura is responsible for oxygen exchange in the lungs.

The lungs are directly attached to the diaphragm without any intervening structures.

The pleura is a single-layered membrane that covers only the lungs.

The pleural cavity is the space between the visceral and parietal pleura.

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Verified step by step guidance

Understand the anatomy of the pleura: The pleura is a double-layered membrane surrounding the lungs. It consists of the visceral pleura, which covers the lungs, and the parietal pleura, which lines the chest cavity.

Identify the pleural cavity: The pleural cavity is the space between the visceral and parietal pleura. It contains a small amount of lubricating fluid that allows the lungs to move smoothly during respiration.

Clarify the function of the pleura: The pleura does not participate in oxygen exchange. Its primary function is to provide a frictionless surface for lung movement and to create a pressure gradient that assists in lung expansion during breathing.

Examine the connection between the lungs and diaphragm: The lungs are not directly attached to the diaphragm. The diaphragm is a muscle that separates the thoracic cavity from the abdominal cavity and plays a crucial role in breathing by contracting and expanding the thoracic cavity.

Correct the misconception about the pleura being single-layered: The pleura is not a single-layered membrane; it is double-layered, consisting of the visceral and parietal pleura, which together form the pleural cavity.