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 is one function of the type II alveolar cells in the lungs?

They facilitate gas exchange between air and blood.

They transport oxygen into the bloodstream.

They remove debris and pathogens from the alveoli.

They produce surfactant to reduce surface tension.

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Verified step by step guidance

Understand the role of alveolar cells in the lungs: The lungs contain different types of cells that contribute to their function. Alveolar cells are crucial for maintaining the structure and function of the alveoli, which are the tiny air sacs where gas exchange occurs.

Differentiate between type I and type II alveolar cells: Type I alveolar cells are primarily involved in the process of gas exchange due to their thin structure, which allows for efficient diffusion of gases. Type II alveolar cells, on the other hand, have a different function.

Identify the function of type II alveolar cells: Type II alveolar cells are responsible for producing and secreting surfactant, a substance that reduces surface tension within the alveoli. This is crucial for preventing the collapse of alveoli and ensuring they remain open for effective gas exchange.

Recognize the importance of surfactant: Surfactant is a lipoprotein complex that decreases the surface tension of the fluid lining the alveoli. By doing so, it prevents the alveoli from collapsing, especially during exhalation, and aids in lung compliance.

Conclude the function of type II alveolar cells: Based on the understanding of their role, the primary function of type II alveolar cells is to produce surfactant, which is essential for maintaining alveolar stability and efficient respiratory function.