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

The skin functions as an important barrier to which of the following?

Bone fractures

Muscle contraction

Oxygen absorption

Pathogens and harmful substances

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Verified step by step guidance

Step 1: Begin by understanding the primary function of the skin in the human body. The skin is the largest organ and serves as a protective barrier against external environmental factors.

Step 2: Recognize that the skin is part of the integumentary system, which includes structures like hair, nails, and glands. Its primary role is to protect the body from physical damage, dehydration, UV radiation, and invasion by pathogens.

Step 3: Analyze the options provided in the question. Bone fractures and muscle contraction are internal processes that are not directly influenced by the skin's barrier function. Oxygen absorption primarily occurs in the lungs, not through the skin.

Step 4: Focus on the correct answer: Pathogens and harmful substances. The skin acts as a physical and chemical barrier, preventing microorganisms and toxic substances from entering the body. It achieves this through its tightly packed cells, acidic pH, and antimicrobial secretions.

Step 5: Conclude by emphasizing the importance of the skin's barrier function in maintaining homeostasis and protecting the body from infections and harmful external agents.