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

Antigens

Anatomy & Physiology

21. The Immune System

Antigens

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Multiple Choice

__________ are substances that can trigger the adaptive defenses and provoke an immune response.

Haptens

Interleukins

Antibodies

Antigens

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Begin by understanding the role of the immune system in the body. The immune system is responsible for defending against pathogens and foreign substances.

Identify the key components of the immune system, including cells like lymphocytes (B cells and T cells) and molecules such as antibodies.

Learn about antigens, which are substances that can trigger the adaptive immune response. Antigens are typically proteins or polysaccharides on the surface of pathogens like bacteria and viruses.

Explore how antigens are recognized by the immune system. B cells and T cells have receptors that specifically bind to antigens, initiating an immune response.

Understand the difference between antigens and other immune-related substances like haptens, interleukins, and antibodies. Haptens are small molecules that can elicit an immune response only when attached to a larger carrier, interleukins are signaling molecules, and antibodies are proteins produced by B cells to neutralize antigens.