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 statements regarding infections involving biofilms is false?

Biofilms are easily eradicated by the host immune system.

Biofilms can form on medical devices such as catheters.

Biofilms contribute to chronic infections.

Biofilms can protect bacteria from antibiotics.

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Verified step by step guidance

Understand what a biofilm is: A biofilm is a complex aggregation of microorganisms growing on a solid substrate. These microorganisms are embedded within a self-produced matrix of extracellular polymeric substances (EPS).

Recognize the characteristics of biofilms: Biofilms are known for their ability to adhere to surfaces, including medical devices, and their resistance to antibiotics and the host immune system.

Evaluate the statement about biofilms being easily eradicated by the host immune system: Biofilms are notoriously difficult for the immune system to eradicate due to their protective matrix and the altered state of the bacteria within them.

Consider the role of biofilms in chronic infections: Biofilms can contribute to chronic infections by providing a persistent source of bacteria that are protected from both the immune response and antibiotic treatment.

Analyze the statement about biofilms forming on medical devices: Biofilms can indeed form on medical devices such as catheters, leading to device-related infections that are challenging to treat.