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

Special smooth muscles in the skin that produce 'goose bumps' when they contract are called __________.

sebaceous glands

Meissner's corpuscles

Pacinian corpuscles

arrector pili muscles

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Verified step by step guidance

Understand the context of the question: The problem is asking about the specific smooth muscles in the skin responsible for producing 'goose bumps' when they contract.

Recall the anatomy of the skin: The skin contains various structures, including glands, sensory receptors, and muscles. Smooth muscles are involuntary muscles that contract without conscious control.

Identify the function of arrector pili muscles: These are small, smooth muscles attached to hair follicles in the dermis layer of the skin. When they contract, they pull the hair upright, causing the appearance of 'goose bumps.' This response is often triggered by cold temperatures or emotional stimuli.

Differentiate the other options: Sebaceous glands are responsible for secreting sebum (oil) to lubricate the skin and hair. Meissner's corpuscles are sensory receptors for light touch, and Pacinian corpuscles are sensory receptors for deep pressure and vibration. None of these are involved in producing 'goose bumps.'

Conclude that the correct answer is arrector pili muscles, as they are the specific smooth muscles responsible for this physiological response.