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 the correct order of air flow from the nose to the alveoli in the lungs?

Nose, Bronchi, Trachea, Larynx, Pharynx, Bronchioles, Alveoli

Nose, Larynx, Pharynx, Trachea, Bronchioles, Bronchi, Alveoli

Nose, Pharynx, Larynx, Trachea, Bronchi, Bronchioles, Alveoli

Nose, Trachea, Pharynx, Larynx, Bronchi, Alveoli, Bronchioles

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Verified step by step guidance

Begin by understanding the anatomy of the respiratory system, which is responsible for the flow of air from the external environment to the lungs.

Identify the starting point of air entry, which is the nose. The nose is responsible for filtering, warming, and humidifying the air.

Next, air passes through the pharynx, a muscular tube that serves as a pathway for both air and food. It connects the nasal cavity to the larynx.

The air then moves to the larynx, also known as the voice box, which is located at the top of the trachea. It plays a role in sound production and protects the trachea against food aspiration.

From the larynx, air travels down the trachea, a tube that connects the larynx to the bronchi. The trachea splits into the left and right bronchi, which lead to each lung. The bronchi further divide into smaller bronchioles, and finally, air reaches the alveoli, where gas exchange occurs.