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 NOT a characteristic of epithelial tissue?

Avascular but innervated

Cells are closely packed with minimal extracellular matrix

Cells exhibit polarity with distinct apical and basal surfaces

Contains abundant blood vessels within the tissue

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Verified step by step guidance

Understand the characteristics of epithelial tissue: Epithelial tissue is avascular, meaning it lacks blood vessels, but it is innervated, meaning it has nerve supply. This is a key feature of epithelial tissue.

Recognize that epithelial cells are tightly packed: Epithelial tissue is composed of cells that are closely packed together with minimal extracellular matrix, which helps in forming protective barriers.

Identify the polarity of epithelial cells: Epithelial cells exhibit polarity, meaning they have distinct apical (top) and basal (bottom) surfaces. The apical surface often faces a lumen or external environment, while the basal surface is attached to a basement membrane.

Evaluate the statement about blood vessels: Epithelial tissue does not contain abundant blood vessels within the tissue itself. Instead, it relies on diffusion from blood vessels in the underlying connective tissue for nutrients and waste exchange.

Determine the correct answer: Based on the characteristics of epithelial tissue, the statement 'Contains abundant blood vessels within the tissue' is NOT a characteristic of epithelial tissue, as it is avascular.