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

Epithelial cells that are adapted for absorption usually have ________ at their free surface.

cilia

flagella

desmosomes

microvilli

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Verified step by step guidance

Understand the function of epithelial cells: Epithelial cells are specialized for various functions, including protection, secretion, and absorption. Cells adapted for absorption are designed to maximize surface area to enhance their ability to take in substances efficiently.

Learn about microvilli: Microvilli are small, finger-like projections on the free surface of epithelial cells. They significantly increase the surface area of the cell, making absorption more effective.

Compare microvilli with other structures: Cilia and flagella are involved in movement, not absorption. Desmosomes are cell junctions that provide structural support and adhesion between cells, but they do not contribute to absorption.

Identify the correct adaptation: Since absorption requires increased surface area, microvilli are the structural adaptation found on epithelial cells specialized for absorption.

Apply the concept: When answering questions about epithelial cells adapted for absorption, always consider the role of microvilli in enhancing the cell's ability to absorb nutrients or other substances.