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

Which of the following is the most appropriate first-line defense action when encountering a patient who is unconscious and unresponsive?

Immediately give the patient water to drink

Check for responsiveness and call for emergency help before starting CPR

Wait for the patient to regain consciousness on their own

Place the patient in a sitting position

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Verified step by step guidance

Step 1: Assess the situation and ensure your own safety before approaching the patient. Make sure the environment is safe for both you and the patient.

Step 2: Check for responsiveness by gently tapping the patient and asking loudly, 'Are you okay?' This helps determine if the patient is conscious or unconscious.

Step 3: If the patient is unresponsive, immediately call for emergency help (e.g., dial 911 or alert nearby medical personnel). This ensures professional assistance is on the way.

Step 4: Begin CPR if you are trained to do so. Check for breathing and a pulse. If there is no breathing or pulse, start chest compressions and rescue breaths following CPR guidelines.

Step 5: Do not give the patient water, attempt to place them in a sitting position, or wait for them to regain consciousness on their own. These actions are inappropriate and could worsen the situation.