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

Why would a body cell that is not a phagocyte need to present antigens?

To produce antibodies against the antigen

To increase the production of red blood cells

To activate T cells and initiate an immune response

To directly destroy pathogens

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Verified step by step guidance

Understand the role of antigen presentation: Antigen presentation is a crucial part of the immune response where cells display antigens on their surface to communicate with immune cells.

Identify the types of cells involved: While phagocytes are known for engulfing pathogens and presenting antigens, other body cells can also present antigens, particularly when they are infected or abnormal.

Explore the mechanism of antigen presentation: Non-phagocytic cells, such as infected body cells, use Major Histocompatibility Complex (MHC) molecules to present antigens on their surface.

Recognize the purpose of antigen presentation by non-phagocytic cells: The primary purpose is to activate T cells, specifically cytotoxic T cells, which are essential for identifying and destroying infected or abnormal cells.

Connect antigen presentation to the immune response: By presenting antigens, non-phagocytic cells help initiate a targeted immune response, ensuring that T cells can recognize and respond to specific threats effectively.