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 tube acts as the trunk of the respiratory tree in the upper respiratory system?

Trachea

Larynx

Esophagus

Bronchus

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Verified step by step guidance

Identify the main components of the upper respiratory system, which include the nasal cavity, pharynx, larynx, and trachea.

Understand the function of each component: the nasal cavity filters and humidifies air, the pharynx serves as a pathway for air and food, the larynx houses the vocal cords, and the trachea is the main airway leading to the lungs.

Recognize that the trachea is often referred to as the 'windpipe' and serves as the primary passageway for air to move from the larynx to the bronchi, making it the trunk of the respiratory tree.

Differentiate between the trachea and other structures: the larynx is involved in sound production, the esophagus is part of the digestive system, and the bronchi are branches of the trachea that lead into the lungs.

Conclude that the trachea is the correct answer as it acts as the trunk of the respiratory tree, connecting the upper respiratory system to the lower respiratory system.