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

How does your body acquire the oxygen needed for cellular function?

By active transport across the cell membrane

Through the breakdown of carbon dioxide in the lungs

Via osmosis in the bloodstream

Through the process of diffusion in the alveoli of the lungs

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Verified step by step guidance

Understand the role of oxygen in cellular function: Oxygen is essential for cellular respiration, a process that generates ATP, the energy currency of the cell.

Identify where oxygen is acquired: Oxygen is obtained from the air we breathe and enters the body through the respiratory system.

Learn about the structure of the lungs: The lungs contain tiny air sacs called alveoli, which are the site of gas exchange.

Explore the process of diffusion: Oxygen moves from areas of higher concentration in the alveoli to areas of lower concentration in the blood capillaries surrounding the alveoli through diffusion.

Recognize the importance of diffusion: Diffusion is a passive transport mechanism that does not require energy, allowing oxygen to efficiently enter the bloodstream and be transported to cells throughout the body.