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

Why are the bronchi and bronchioles together referred to as the conducting zone in lung physiology?

They are the primary sites of oxygen absorption into the bloodstream.

They are responsible for gas exchange with the blood.

They contain alveoli that facilitate oxygen and carbon dioxide exchange.

They transport air to the respiratory zone where gas exchange occurs.

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Verified step by step guidance

Understand the structure of the respiratory system: The respiratory system is divided into the conducting zone and the respiratory zone. The conducting zone includes the nose, pharynx, larynx, trachea, bronchi, and bronchioles.

Identify the function of the conducting zone: The primary role of the conducting zone is to transport air from the external environment to the respiratory zone. It does not participate in gas exchange.

Recognize the components of the conducting zone: The bronchi and bronchioles are part of the conducting zone. They serve as passageways for air to reach the deeper parts of the lungs.

Differentiate between the conducting zone and the respiratory zone: The respiratory zone, which includes the alveoli, is where gas exchange occurs. The conducting zone is responsible for moving air to this area.

Clarify the misconception: While the bronchi and bronchioles are crucial for air transport, they do not directly facilitate gas exchange. Their role is to ensure air reaches the alveoli in the respiratory zone where oxygen and carbon dioxide exchange takes place.