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 is a metabolic function of the skin?

Regulation of body temperature

Detection of touch stimuli

Synthesis of vitamin D

Production of melanin

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Verified step by step guidance

Understand the term 'metabolic function'—it refers to chemical processes that occur within the body to maintain life, such as synthesis, breakdown, or transformation of substances.

Review the functions of the skin. The skin has various roles, including protection, sensory reception, thermoregulation, and metabolic functions.

Focus on the metabolic function of the skin. The synthesis of vitamin D is a key metabolic process that occurs in the skin when exposed to ultraviolet (UV) light from the sun.

Explain the process of vitamin D synthesis: UV light converts 7-dehydrocholesterol in the skin into cholecalciferol (vitamin D3), which is then transported to the liver and kidneys for further activation into its biologically active form, calcitriol.

Clarify why the other options are not metabolic functions: Regulation of body temperature is a thermoregulatory function, detection of touch stimuli is a sensory function, and production of melanin is a protective function against UV radiation, not a metabolic process.