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 the Immune System

Anatomy & Physiology

21. The Immune System

Introduction to the Immune System

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Multiple Choice

Which of the following induces a type III hypersensitivity reaction?

Delayed-type hypersensitivity

IgE-mediated response

Cytotoxic T cell activation

Immune complex formation

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Verified step by step guidance

Understand the concept of hypersensitivity reactions: Hypersensitivity reactions are exaggerated immune responses that can cause tissue damage. They are classified into four types: Type I, Type II, Type III, and Type IV.

Identify the characteristics of Type III hypersensitivity: Type III hypersensitivity is characterized by the formation of immune complexes, which are aggregates of antigens and antibodies. These complexes can deposit in tissues and lead to inflammation and tissue damage.

Differentiate between the types of hypersensitivity: Type I is IgE-mediated and involves allergic reactions. Type II involves cytotoxic reactions mediated by antibodies. Type IV is delayed-type hypersensitivity involving T cell activation.

Recognize the role of immune complexes in Type III hypersensitivity: In Type III hypersensitivity, the immune complexes formed can activate the complement system, leading to inflammation and recruitment of immune cells to the site of deposition.

Conclude that immune complex formation is the mechanism behind Type III hypersensitivity: Based on the characteristics and mechanisms involved, immune complex formation is the correct answer for inducing a Type III hypersensitivity reaction.