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 Innate Immunity

Anatomy & Physiology

21. The Immune System

Introduction to Innate Immunity

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Multiple Choice

Which of the following is not a characteristic of innate immunity?

Rapid response to pathogens

Physical and chemical barriers

Lack of memory

Specificity to particular pathogens

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Verified step by step guidance

Understand the concept of innate immunity: Innate immunity is the body's first line of defense against pathogens. It is non-specific, meaning it does not target specific pathogens but rather provides a general defense.

Identify the characteristics of innate immunity: Innate immunity includes rapid response to pathogens, physical and chemical barriers (like skin and mucous membranes), and a lack of memory, meaning it does not remember past infections.

Analyze the options given: The options provided are rapid response to pathogens, physical and chemical barriers, lack of memory, and specificity to particular pathogens.

Determine which characteristic does not belong: Innate immunity is non-specific, so it does not have specificity to particular pathogens. This characteristic is actually a feature of adaptive immunity, which targets specific pathogens and has memory.

Conclude the analysis: Based on the understanding of innate immunity, the characteristic 'specificity to particular pathogens' is not a feature of innate immunity, making it the correct answer to the question.