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

Review of the Complement System

Anatomy & Physiology

21. The Immune System

Review of the Complement System

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Multiple Choice

Which of the following are most susceptible to complement lysis?

Gram-positive bacteria.

Gram-negative bacteria.

Bacteriophages.

Prions.

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Verified step by step guidance

Understand the role of the complement system: The complement system is a part of the immune system that enhances the ability of antibodies and phagocytic cells to clear microbes and damaged cells, promote inflammation, and attack the pathogen's cell membrane.

Identify the structural differences between Gram-positive and Gram-negative bacteria: Gram-positive bacteria have a thick peptidoglycan layer, whereas Gram-negative bacteria have a thinner peptidoglycan layer and an outer membrane containing lipopolysaccharides.

Recognize how the complement system interacts with bacterial membranes: The complement system can form a membrane attack complex (MAC) that creates pores in the outer membrane of Gram-negative bacteria, leading to cell lysis.

Consider the susceptibility of different pathogens to complement lysis: Gram-negative bacteria are more susceptible to complement lysis due to their outer membrane structure, which is targeted by the MAC.

Evaluate the options given: Gram-positive bacteria, bacteriophages, and prions are less susceptible to complement lysis compared to Gram-negative bacteria, which are the most susceptible due to their outer membrane structure.