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 safest initial action to take for someone suspected of having hypothermia?

Have the person run to increase body temperature.

Move the person to a warm, sheltered environment and remove any wet clothing.

Offer the person alcoholic beverages to warm them up.

Give the person a hot shower immediately.

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Verified step by step guidance

Step 1: Understand the physiological effects of hypothermia. Hypothermia occurs when the body loses heat faster than it can produce it, leading to a dangerously low body temperature. This can impair normal bodily functions, including the cardiovascular and nervous systems.

Step 2: Recognize the importance of minimizing further heat loss. Wet clothing accelerates heat loss due to evaporation and conduction, so removing wet clothing is a critical step in managing hypothermia.

Step 3: Move the person to a warm, sheltered environment. This helps prevent further exposure to cold temperatures and provides a controlled space to begin rewarming the individual safely.

Step 4: Avoid actions that could worsen the condition. For example, running to increase body temperature can strain the heart and muscles, while offering alcoholic beverages can impair judgment and cause further heat loss due to vasodilation.

Step 5: Gradually rewarm the person using safe methods, such as warm blankets or warm beverages (if they are conscious and able to swallow). Avoid sudden temperature changes, such as hot showers, which can cause shock or cardiovascular stress.