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 hair follicle, hair strand, arrector pili muscle, and sebaceous gland together make up which of the following?

Epidermal ridge

Sweat gland apparatus

Dermal papilla

Pilosebaceous unit

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Verified step by step guidance

Understand the components mentioned in the problem: The hair follicle is the structure in the skin that produces hair, the hair strand is the visible part of the hair, the arrector pili muscle is a small muscle attached to the hair follicle that causes hair to stand up (goosebumps), and the sebaceous gland produces sebum (oil) to lubricate the skin and hair.

Recognize that these components work together as a functional unit in the skin. They are anatomically and physiologically connected to support hair growth, lubrication, and thermoregulation.

Learn the term 'Pilosebaceous unit,' which refers to the collective structure of the hair follicle, hair strand, arrector pili muscle, and sebaceous gland. This term is used to describe their combined function in maintaining skin and hair health.

Eliminate the incorrect options: 'Epidermal ridge' refers to the ridges on the skin surface that form fingerprints, 'Sweat gland apparatus' refers to structures involved in sweat production, and 'Dermal papilla' refers to the connective tissue at the base of the hair follicle that supplies nutrients to the growing hair.

Conclude that the correct answer is 'Pilosebaceous unit,' as it accurately describes the combination of the hair follicle, hair strand, arrector pili muscle, and sebaceous gland.