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 small, air-filled chambers where gases are exchanged in the lungs are called:

Alveoli

Bronchioles

Capillaries

Tracheae

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Verified step by step guidance

Step 1: Begin by understanding the anatomy of the respiratory system. The lungs contain structures that facilitate gas exchange, which is the process of oxygen entering the blood and carbon dioxide leaving the blood.

Step 2: Recall the hierarchy of structures in the respiratory system. Air travels through the trachea, bronchi, bronchioles, and finally reaches the alveoli, which are the smallest air-filled chambers in the lungs.

Step 3: Learn the function of alveoli. These tiny sacs are surrounded by capillaries and are the primary site for gas exchange due to their thin walls and large surface area.

Step 4: Differentiate between the options provided. Bronchioles are small airways that lead to alveoli, capillaries are blood vessels involved in gas exchange, and the trachea is the windpipe that conducts air to the lungs. Alveoli are the correct answer as they are the specific chambers where gas exchange occurs.

Step 5: Confirm your understanding by visualizing or referencing a diagram of the respiratory system to see the alveoli's role in gas exchange and their relationship with surrounding structures.