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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

The respiratory conducting passageways perform all of the following functions except:

exchanging gases between air and blood

warming incoming air

humidifying incoming air

filtering out dust and debris

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Verified step by step guidance

Step 1: Understand the role of the respiratory conducting passageways. These structures include the nose, pharynx, larynx, trachea, bronchi, and bronchioles. Their primary function is to transport air to the lungs, not directly exchange gases.

Step 2: Review the process of gas exchange. Gas exchange occurs in the alveoli of the lungs, where oxygen diffuses into the blood and carbon dioxide diffuses out. This is distinct from the functions of the conducting passageways.

Step 3: Examine the functions of the conducting passageways. They are responsible for warming incoming air (via blood vessels in the mucosa), humidifying air (adding moisture to prevent dryness in the lungs), and filtering out dust and debris (via mucus and cilia).

Step 4: Compare the listed functions in the question. Identify which function is not performed by the conducting passageways. Gas exchange is the correct answer because it occurs in the alveoli, not the conducting passageways.

Step 5: Conclude that the conducting passageways are essential for preparing air for efficient gas exchange in the lungs, but they do not directly participate in the exchange of gases between air and blood.