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

Characteristics of Epithelial Tissue

Anatomy & Physiology

4. Tissues & Histology

Characteristics of Epithelial Tissue

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Multiple Choice

Which of the following is a main characteristic of epithelial tissues?

They are composed primarily of extracellular matrix.

They have a high degree of vascularization.

They have a free surface exposed to the environment or an internal space.

They are loosely packed with cells.

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Verified step by step guidance

Understand the basic characteristics of epithelial tissues: Epithelial tissues are one of the four main types of tissues in the body, and they serve as coverings or linings of surfaces and cavities.

Identify the key feature of epithelial tissues: A defining characteristic of epithelial tissues is that they have a free surface that is exposed to either the external environment or an internal space, such as the lumen of an organ.

Differentiate epithelial tissues from other tissue types: Unlike connective tissues, epithelial tissues are not primarily composed of extracellular matrix. Instead, they are tightly packed with cells.

Consider the vascularization of epithelial tissues: Epithelial tissues are generally avascular, meaning they do not have a high degree of vascularization. They rely on diffusion from underlying tissues for nutrients.

Recognize the arrangement of cells in epithelial tissues: Epithelial cells are closely packed together, forming continuous sheets, which is contrary to the statement that they are loosely packed.