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

4. Tissues & Histology

Introduction to Epithelial Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Epithelial Tissue

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Multiple Choice

Which type of epithelial tissue forms the upper layer of the epidermis?

Simple columnar epithelium

Simple cuboidal epithelium

Stratified squamous epithelium

Transitional epithelium

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Verified step by step guidance

Understand the structure and function of the epidermis: The epidermis is the outermost layer of the skin, designed to protect the body from environmental damage, pathogens, and water loss. It requires a durable and protective tissue type.

Review the characteristics of epithelial tissue types: Simple columnar epithelium is specialized for absorption and secretion, found in areas like the digestive tract. Simple cuboidal epithelium is involved in secretion and absorption, typically found in glands and kidney tubules. Transitional epithelium is specialized for stretching, found in the urinary bladder.

Focus on stratified squamous epithelium: This tissue type consists of multiple layers of cells, making it ideal for protection against abrasion, pathogens, and water loss. The cells in the uppermost layer are flattened (squamous) and often keratinized for added durability.

Connect the function of stratified squamous epithelium to the epidermis: The upper layer of the epidermis is composed of keratinized stratified squamous epithelium, which provides a tough, protective barrier. The keratinized cells are dead and filled with keratin, a protein that strengthens the tissue.

Conclude that stratified squamous epithelium is the correct answer: Based on its structure and function, stratified squamous epithelium is the tissue type that forms the upper layer of the epidermis, making it the most suitable choice for this problem.