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 First-Line Defenses

Anatomy & Physiology

21. The Immune System

Introduction to First-Line Defenses

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Multiple Choice

What is the best approach to lowering the risk for infection when giving first aid care?

Washing hands thoroughly before and after providing care

Using bare hands to stop bleeding

Applying a bandage without cleaning the wound

Covering the wound with any available cloth

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Verified step by step guidance

Understand the importance of infection control in first aid care. Infection can occur when harmful microorganisms enter the body through open wounds, so minimizing this risk is crucial.

Recognize that washing hands thoroughly before and after providing care is a key step in preventing the transfer of pathogens. This includes using soap and water or an alcohol-based hand sanitizer if soap is unavailable.

Avoid using bare hands to stop bleeding. Instead, use gloves or a barrier (such as a clean cloth) to protect both the caregiver and the injured person from potential contamination.

Clean the wound properly before applying a bandage. This involves rinsing the wound with clean water or saline solution to remove dirt and debris, which can harbor bacteria.

Use sterile or clean materials to cover the wound. Avoid using random cloths that may not be clean, as they can introduce pathogens into the wound and increase the risk of infection.