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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

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

Simple squamous epithelium

Stratified squamous epithelium

Transitional epithelium

Simple cuboidal epithelium

Previous problemNext problem

Verified step by step guidance

Understand the function of the alveoli: The alveoli are tiny air sacs in the lungs where gas exchange occurs. This requires a thin barrier to facilitate the diffusion of oxygen and carbon dioxide.

Identify the characteristics of simple squamous epithelium: This type of epithelium consists of a single layer of flat cells, which is ideal for diffusion and filtration due to its minimal thickness.

Consider the other types of epithelium: Stratified squamous epithelium is multiple layers thick, providing protection rather than facilitating diffusion. Transitional epithelium is specialized for stretching, found in the urinary bladder. Simple cuboidal epithelium, while single-layered, is thicker than squamous and is more involved in secretion and absorption.

Match the function of the alveoli with the appropriate epithelial type: Since the primary function of the alveoli is gas exchange, the epithelium must be as thin as possible to allow efficient diffusion.

Conclude that the simple squamous epithelium is the most suitable type for the alveoli lining, as it provides the necessary thin barrier for effective gas exchange.