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 first step in caring for a wound with significant bleeding?

Clean the wound with soap and water

Cover the wound with a sterile bandage

Apply an antibiotic ointment

Apply direct pressure to the wound

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Verified step by step guidance

Assess the wound to determine the severity of bleeding and ensure the safety of the situation. If the bleeding is significant, prioritize stopping the blood flow immediately.

Use a clean cloth, gauze, or your hand (if no materials are available) to apply direct pressure to the wound. This helps to compress the blood vessels and slow or stop the bleeding.

Maintain firm and consistent pressure on the wound for several minutes. Avoid lifting the cloth or gauze to check the wound, as this can disrupt clot formation.

If the bleeding does not stop, consider adding more layers of cloth or gauze without removing the initial layer, and continue applying pressure. Elevate the wound above the level of the heart if possible to reduce blood flow to the area.

Once the bleeding is controlled, proceed with cleaning the wound, applying an antibiotic ointment, and covering it with a sterile bandage to prevent infection and promote healing.