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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

The arrector pili muscle is represented by which of the following structures?

A small smooth muscle attached to hair follicles in the skin

A skeletal muscle responsible for voluntary movement

A nerve ending that detects pressure

A gland that secretes sweat onto the skin surface

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Verified step by step guidance

Understand the function of the arrector pili muscle: It is responsible for causing hair to stand on end (goosebumps) when the body is cold or experiencing emotional stimuli.

Recall the type of muscle tissue involved: The arrector pili muscle is composed of smooth muscle, which is involuntary and not under conscious control.

Identify the anatomical location: The arrector pili muscle is attached to hair follicles in the dermis layer of the skin.

Eliminate incorrect options: Skeletal muscle is responsible for voluntary movement, nerve endings detect sensory stimuli, and glands secrete substances like sweat or oil. None of these match the description of the arrector pili muscle.

Select the correct answer: The arrector pili muscle is a small smooth muscle attached to hair follicles in the skin.