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

Which of the following is a structure found within the hair bulb?

Hair papilla

Epidermal ridge

Arrector pili muscle

Sebaceous gland

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Verified step by step guidance

Step 1: Begin by understanding the anatomy of the hair bulb. The hair bulb is the base of the hair follicle, located in the dermis, and is responsible for hair growth. It contains several structures that support this function.

Step 2: Identify the role of the hair papilla. The hair papilla is a structure found within the hair bulb. It contains blood vessels that supply nutrients and oxygen to the growing hair cells, making it essential for hair growth.

Step 3: Examine the other options provided. The epidermal ridge is part of the skin's surface and not located within the hair bulb. The arrector pili muscle is attached to the hair follicle but is external to the bulb. The sebaceous gland is also associated with the hair follicle but is not part of the hair bulb itself.

Step 4: Compare the anatomical location and function of each option to determine which structure is specifically found within the hair bulb. The hair papilla is the only structure listed that resides within the bulb and directly contributes to hair growth.

Step 5: Conclude that the correct answer is 'Hair papilla,' as it is the structure found within the hair bulb, while the other options are external or unrelated to the bulb.