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 immune system response is most likely to be activated in a patient who presents with profound cyanosis following a chest injury?

Antibody-mediated hypersensitivity

Autoimmune response

Inflammatory response

Allergic reaction

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Verified step by step guidance

Step 1: Understand the context of the problem. Cyanosis is a condition characterized by a bluish discoloration of the skin due to insufficient oxygen in the blood. A chest injury can lead to tissue damage, which triggers the body's immune system to respond.

Step 2: Review the immune system responses listed in the problem. These include antibody-mediated hypersensitivity, autoimmune response, inflammatory response, and allergic reaction. Each has distinct mechanisms and triggers.

Step 3: Focus on the inflammatory response. This is the body's immediate reaction to injury or infection, involving the release of chemical mediators like histamine and cytokines. These mediators increase blood flow, recruit immune cells, and promote healing in the affected area.

Step 4: Eliminate other options. Antibody-mediated hypersensitivity typically involves an exaggerated immune response to antigens, such as in allergies or autoimmune diseases. Autoimmune responses occur when the immune system attacks the body's own tissues. Allergic reactions are triggered by allergens, not physical trauma.

Step 5: Conclude that the inflammatory response is the most likely immune system activation in this scenario, as it directly addresses tissue damage and promotes repair following the chest injury.