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

5. Integumentary System

Introduction to the Integumentary System

Anatomy & Physiology

5. Integumentary System

Introduction to the Integumentary System

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Multiple Choice

Which of the following best describes a third-degree burn?

A burn that affects only the epidermis, causing redness and pain

A burn that damages both the epidermis and dermis, resulting in blisters and swelling

A burn that destroys the epidermis, dermis, and underlying tissues, often resulting in numbness

A burn that causes mild discomfort and slight swelling without damaging skin layers

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Verified step by step guidance

Step 1: Understand the classification of burns based on severity. Burns are categorized into first-degree, second-degree, and third-degree burns, each affecting different layers of the skin.

Step 2: Recall the anatomy of the skin. The skin consists of three main layers: the epidermis (outermost layer), the dermis (middle layer), and the hypodermis or subcutaneous tissue (innermost layer). Third-degree burns affect all three layers and may extend to underlying tissues such as muscles or bones.

Step 3: Review the symptoms of third-degree burns. These burns often result in numbness due to nerve damage, and the skin may appear charred, white, or leathery. Unlike first- and second-degree burns, third-degree burns do not cause pain in the affected area because the nerve endings are destroyed.

Step 4: Compare the descriptions provided in the question. Eliminate options that describe less severe burns, such as those affecting only the epidermis (first-degree) or both the epidermis and dermis (second-degree). Focus on the description that matches the characteristics of third-degree burns.

Step 5: Confirm that the correct answer is the description stating that third-degree burns destroy the epidermis, dermis, and underlying tissues, often resulting in numbness due to nerve damage.