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 of the following would be considered a virulence factor of a pathogen?

Capsule formation

Antibody production

Mitochondrial replication

Phagocytosis

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Verified step by step guidance

Understand the concept of virulence factors: Virulence factors are molecules produced by pathogens that contribute to the pathogenicity and enable them to colonize the host, evade the immune system, and cause disease.

Evaluate each option in the context of virulence factors: Consider how each option might contribute to the pathogen's ability to cause disease.

Analyze 'Capsule formation': Capsules are protective layers that surround some bacteria, helping them evade phagocytosis by the host's immune cells, thus enhancing their virulence.

Consider 'Antibody production': Antibodies are produced by the host's immune system to fight pathogens, not by the pathogens themselves, so this is not a virulence factor.

Review 'Mitochondrial replication' and 'Phagocytosis': Mitochondrial replication is a cellular process in eukaryotic cells, not related to pathogen virulence. Phagocytosis is a mechanism used by host cells to engulf and destroy pathogens, not a virulence factor.