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 NOT a major cell type found in the epidermis of the skin?

Keratinocyte

Melanocyte

Langerhans cell

Fibroblast

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Verified step by step guidance

Step 1: Begin by understanding the structure of the epidermis, which is the outermost layer of the skin. The epidermis is primarily composed of specific cell types that contribute to its function, such as protection, pigmentation, and immune defense.

Step 2: Identify the major cell types found in the epidermis. These include: (1) Keratinocytes, which produce keratin and form the majority of the epidermis; (2) Melanocytes, which produce melanin and contribute to skin pigmentation; and (3) Langerhans cells, which are immune cells involved in detecting pathogens.

Step 3: Recognize that fibroblasts are not part of the epidermis. Fibroblasts are connective tissue cells found in the dermis (the layer beneath the epidermis) and are responsible for producing collagen and extracellular matrix components.

Step 4: Compare the listed cell types to determine which one does not belong to the epidermis. Keratinocytes, melanocytes, and Langerhans cells are all integral to the epidermis, while fibroblasts are located in the dermis.

Step 5: Conclude that fibroblasts are not a major cell type found in the epidermis, as they are part of the dermis and serve a different function related to connective tissue.