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 primary function of the skin?

Production of red blood cells

Digestion of nutrients

Protection against pathogens

Transmission of nerve impulses to muscles

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Verified step by step guidance

Step 1: Begin by identifying the primary functions of the skin. The skin is the largest organ of the body and is part of the integumentary system. Its main roles include protection, regulation, and sensation.

Step 2: Evaluate each option provided in the question. For example, 'Production of red blood cells' is a function of the bone marrow, not the skin. Similarly, 'Digestion of nutrients' is a function of the digestive system, not the skin.

Step 3: Consider the correct answer, 'Protection against pathogens.' The skin acts as a physical barrier, preventing harmful microorganisms, pathogens, and environmental toxins from entering the body. This is a key function of the skin.

Step 4: Analyze the final option, 'Transmission of nerve impulses to muscles.' While the skin contains sensory receptors that detect stimuli, the transmission of nerve impulses to muscles is primarily a function of the nervous system.

Step 5: Conclude that the correct answer is 'Protection against pathogens,' as this aligns with the skin's primary role in maintaining the body's defense mechanisms.