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 included in the body's nonspecific defense against invading pathogens?

Skin and mucous membranes

B lymphocytes

Antibodies

T lymphocytes

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Verified step by step guidance

Understand the concept of nonspecific defense mechanisms: These are the body's first line of defense against pathogens and are not tailored to specific invaders. They include physical and chemical barriers.

Identify the components of nonspecific defense: The skin and mucous membranes are part of this category. They act as physical barriers to prevent pathogens from entering the body.

Differentiate between nonspecific and specific defenses: Specific defenses involve the immune system targeting specific pathogens, such as B lymphocytes, T lymphocytes, and antibodies.

Recognize the role of skin and mucous membranes: The skin acts as a physical barrier, while mucous membranes trap pathogens and contain enzymes that can destroy them.

Conclude that skin and mucous membranes are part of the nonspecific defense system, while B lymphocytes, T lymphocytes, and antibodies are part of the specific immune response.