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

What might occur if the chest cavity is punctured?

Both lungs will collapse simultaneously, leading to instant respiratory failure.

The diaphragm will become paralyzed, stopping all breathing.

The heart rate will immediately double to compensate for the injury.

The lung on the affected side may collapse due to loss of negative pressure.

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Verified step by step guidance

Understand the anatomy of the chest cavity: The chest cavity is a sealed space that houses the lungs, heart, and diaphragm. It is crucial for maintaining the negative pressure required for lung expansion during breathing.

Recognize the role of negative pressure: The lungs are surrounded by a pleural cavity that maintains a negative pressure relative to the atmospheric pressure. This negative pressure is essential for keeping the lungs inflated.

Identify the impact of a puncture: If the chest cavity is punctured, air can enter the pleural space, disrupting the negative pressure. This condition is known as pneumothorax.

Consider the effects on the lungs: When the negative pressure is lost, the lung on the affected side may collapse because it can no longer expand properly during inhalation.

Evaluate the physiological response: While the lung on the affected side may collapse, the other lung can continue to function. The body may attempt to compensate through increased respiratory rate or heart rate, but immediate collapse of both lungs or paralysis of the diaphragm is unlikely.