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

What is the main function of Immunoglobulin D (IgD) in the immune system?

To act as a receptor on B cells for antigen recognition

To neutralize toxins and viruses in the bloodstream

To activate the complement system

To mediate allergic reactions

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Verified step by step guidance

Understand the role of Immunoglobulin D (IgD) in the immune system. IgD is one of the five classes of immunoglobulins, which are antibodies produced by B cells.

Recognize that IgD is primarily found on the surface of immature B cells. It plays a crucial role in the early stages of the immune response.

Learn that IgD functions as a receptor for antigens. When an antigen binds to IgD on the surface of a B cell, it triggers the B cell to become activated.

Explore how the activation of B cells leads to their proliferation and differentiation into plasma cells, which produce antibodies specific to the antigen.

Note that while IgD is involved in antigen recognition, it does not directly neutralize toxins, activate the complement system, or mediate allergic reactions. These functions are associated with other classes of immunoglobulins, such as IgG, IgM, and IgE.