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

21. The Immune System

Introduction to Adaptive Immunity

Anatomy & Physiology

21. The Immune System

Introduction to Adaptive Immunity

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Multiple Choice

What is the primary difference between active and passive immunity?

Active immunity is acquired through vaccination, whereas passive immunity is only acquired through natural infection.

Active immunity involves the production of antibodies by the individual's own immune system, while passive immunity involves the transfer of antibodies from another source.

Active immunity is temporary, whereas passive immunity provides lifelong protection.

Active immunity provides immediate protection, while passive immunity takes time to develop.

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Verified step by step guidance

Understand the concept of immunity: Immunity is the body's ability to resist or eliminate potentially harmful foreign materials or abnormal cells.

Define active immunity: Active immunity occurs when exposure to a disease organism triggers the immune system to produce antibodies to that disease. This can happen through natural infection or through vaccination.

Define passive immunity: Passive immunity is provided when a person is given antibodies to a disease rather than producing them through their own immune system. This can occur naturally, such as when antibodies are passed from mother to baby, or artificially through antibody-containing blood products.

Identify the key difference: The primary difference is that active immunity involves the individual's own immune system producing antibodies, whereas passive immunity involves receiving antibodies from an external source.

Clarify the duration of protection: Active immunity usually provides long-lasting protection, sometimes lifelong, because the immune system remembers the pathogen. In contrast, passive immunity provides immediate but temporary protection, as the transferred antibodies are eventually broken down.