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

The function of the respiratory system is to ________.

produce digestive enzymes

regulate hormone secretion

filter waste from the blood

exchange gases between the body and the environment

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Verified step by step guidance

Understand the primary function of the respiratory system: The respiratory system is responsible for facilitating the exchange of gases, specifically oxygen and carbon dioxide, between the body and the external environment.

Recall the anatomy of the respiratory system: Key structures include the lungs, trachea, bronchi, alveoli, and diaphragm, all of which work together to enable breathing and gas exchange.

Identify the physiological process: Oxygen is inhaled into the lungs, diffuses into the bloodstream through the alveoli, and is transported to tissues. Carbon dioxide, a waste product of cellular respiration, is carried back to the lungs and exhaled.

Eliminate incorrect options: Digestive enzymes are produced by the digestive system, hormone secretion is regulated by the endocrine system, and waste filtration is the function of the urinary system.

Confirm the correct answer: The respiratory system's primary role is to exchange gases between the body and the environment, ensuring oxygen delivery and carbon dioxide removal.