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 the muscles that make hair stand up in the integumentary system?

To secrete oil onto the skin surface

To help regulate body temperature by trapping air

To detect pressure and touch sensations

To produce sweat for cooling the body

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Verified step by step guidance

Understand the context of the integumentary system: The integumentary system includes the skin, hair, nails, and associated glands. It plays a role in protection, temperature regulation, sensation, and more.

Identify the muscles involved: The muscles responsible for making hair stand up are called arrector pili muscles. These are small, smooth muscles attached to hair follicles.

Learn the mechanism: When the arrector pili muscles contract, they pull the hair follicle upright, causing the hair to stand up. This process is known as piloerection.

Connect the function: Piloerection traps a layer of air close to the skin, which helps insulate the body and regulate temperature, especially in cold conditions. This is a thermoregulatory response.

Eliminate incorrect options: The arrector pili muscles do not secrete oil, detect sensations, or produce sweat. Their primary function is temperature regulation by trapping air, which aligns with the correct answer.