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 lining of the air sacs in the lungs (alveoli) is comprised of what type of epithelium?

Stratified squamous epithelium

Transitional epithelium

Simple squamous epithelium

Simple cuboidal epithelium

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Verified step by step guidance

Understand the function of the alveoli: The alveoli are tiny air sacs in the lungs where gas exchange occurs. Their structure is optimized for efficient diffusion of oxygen and carbon dioxide.

Learn the characteristics of epithelial tissue types: Simple squamous epithelium is thin and flat, allowing for rapid diffusion, while other types like stratified squamous or simple cuboidal epithelium are thicker and less suited for gas exchange.

Match the function to the structure: Since the alveoli require a thin barrier for gas exchange, the simple squamous epithelium is the most appropriate type of tissue for this function.

Eliminate incorrect options: Stratified squamous epithelium is too thick for efficient gas exchange, transitional epithelium is specialized for stretching (e.g., in the bladder), and simple cuboidal epithelium is more suited for secretion and absorption rather than diffusion.

Conclude that the lining of the alveoli is composed of simple squamous epithelium, as it is the best-suited tissue for facilitating gas exchange in the lungs.