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 Heart2h 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

Outcomes of Antibody Binding to Antigen

Anatomy & Physiology

21. The Immune System

Outcomes of Antibody Binding to Antigen

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Multiple Choice

Which of the following is NOT a protective outcome of antibody-antigen binding?

Antibody-antigen complex triggering the complement system when bound to an antigen.

Antibodies cross-linking pathogens so that they can be easily phagocytosed by macrophages.

Antibodies signaling to a cytotoxic T cell that a host cell is infected.

Antibodies binding to bacteria and prevent the bacteria from moving throughout the body.

Antibodies binding to blood vessel walls resulting in vasodilation.

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Verified step by step guidance

Understand the role of antibodies in the immune system: Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Identify the protective outcomes of antibody-antigen binding: These include neutralization of pathogens, opsonization (marking for phagocytosis), activation of the complement system, and agglutination (clumping of pathogens).

Evaluate each option: Determine if each option describes a known protective mechanism of antibody-antigen interactions.

Analyze the option 'Antibodies binding to blood vessel walls resulting in vasodilation': Consider whether this is a recognized protective mechanism of antibody action.

Conclude that 'Antibodies binding to blood vessel walls resulting in vasodilation' is not a typical protective outcome of antibody-antigen binding, as vasodilation is not directly related to the neutralization or elimination of pathogens.