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

What is the primary function of melanin in the integumentary system?

To produce vitamin D

To regulate body temperature

To provide structural support to the skin

To protect the skin from ultraviolet radiation

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Verified step by step guidance

Understand the role of melanin: Melanin is a pigment produced by cells called melanocytes in the skin. It is responsible for the coloration of the skin, hair, and eyes.

Identify the primary function of melanin: The main function of melanin is to absorb and dissipate ultraviolet (UV) radiation from the sun, thereby protecting the skin cells from UV damage.

Consider the options provided: Evaluate each option in the context of melanin's role. Producing vitamin D is a function of the skin but not directly related to melanin. Regulating body temperature involves sweat glands and blood vessels, not melanin. Providing structural support is a function of collagen and elastin, not melanin.

Focus on UV protection: Melanin's ability to absorb UV radiation helps prevent DNA damage in skin cells, reducing the risk of skin cancer and other UV-related damage.

Conclude with the correct function: Based on the understanding of melanin's role, the primary function of melanin in the integumentary system is to protect the skin from ultraviolet radiation.