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

The Epidermis: Layers

Anatomy & Physiology

5. Integumentary System

The Epidermis: Layers

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Multiple Choice

What is the correct order of the epidermal strata from the basement membrane to the free surface?

Stratum granulosum, stratum spinosum, stratum basale, stratum corneum, stratum lucidum

Stratum spinosum, stratum basale, stratum granulosum, stratum corneum, stratum lucidum

Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale

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Verified step by step guidance

Understand that the epidermis is composed of five distinct layers (strata) in thick skin, arranged from the deepest layer near the basement membrane to the outermost layer at the free surface.

Identify the layers in order: Stratum basale (deepest layer), Stratum spinosum, Stratum granulosum, Stratum lucidum (only present in thick skin), and Stratum corneum (outermost layer).

Recognize the function of each layer: Stratum basale contains actively dividing cells; Stratum spinosum provides strength and flexibility; Stratum granulosum contributes to keratinization; Stratum lucidum adds an extra protective layer in thick skin; Stratum corneum consists of dead, keratinized cells that form a tough barrier.

Compare the given options to the correct order of the layers: Stratum basale → Stratum spinosum → Stratum granulosum → Stratum lucidum → Stratum corneum.

Select the option that matches the correct order of the epidermal strata, ensuring it aligns with the anatomical structure of the skin.