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

The mucosa of the esophagus is lined with ______ squamous epithelium.

transitional

simple

stratified

pseudostratified

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Verified step by step guidance

Understand the structure and function of the esophagus: The esophagus is a muscular tube that transports food from the mouth to the stomach. Its mucosa must withstand mechanical stress from food particles during swallowing.

Learn about the types of epithelial tissue: Epithelial tissues are classified based on the number of layers and the shape of the cells. For example, simple epithelium has one layer, while stratified epithelium has multiple layers. Squamous epithelium consists of flat, scale-like cells.

Determine the type of epithelium suitable for the esophagus: Since the esophagus experiences mechanical abrasion, it requires a protective lining. Stratified squamous epithelium is ideal because its multiple layers provide durability and protection against wear and tear.

Compare the options provided: Transitional epithelium is found in areas like the bladder, where stretching occurs. Simple epithelium is a single layer and not suitable for high abrasion areas. Pseudostratified epithelium appears layered but is not truly stratified, and it is typically found in the respiratory tract.

Conclude that the correct answer is stratified squamous epithelium, as it is specifically adapted to protect the esophagus from mechanical stress and abrasion.