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 type of defense guards against a broad range of pathogens in the innate immune system?

Humoral immunity

Cell-mediated immunity

Innate immunity

Adaptive immunity

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Verified step by step guidance

Understand the difference between innate and adaptive immunity. Innate immunity is the body's first line of defense and responds to pathogens in a generic way, while adaptive immunity is more specific and develops over time.

Recognize that innate immunity includes physical barriers like skin and mucous membranes, as well as internal defenses such as phagocytes, natural killer cells, and the complement system.

Identify that innate immunity is non-specific, meaning it does not target specific pathogens but rather provides a broad defense against any pathogen that enters the body.

Differentiate between humoral and cell-mediated immunity, which are components of adaptive immunity. Humoral immunity involves antibodies produced by B cells, while cell-mediated immunity involves T cells targeting infected cells.

Conclude that the type of defense that guards against a broad range of pathogens in the innate immune system is indeed innate immunity, as it provides a general defense mechanism without specificity.