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

Select the correct statement regarding epithelial tissue.

Epithelial tissue is highly vascularized and contains many blood vessels.

Epithelial tissue is found only on the external surfaces of the body.

Epithelial cells are loosely packed with large spaces between them.

Epithelial tissue always has a free surface exposed to the body exterior or to an internal cavity.

Previous problemNext problem

Verified step by step guidance

Understand the characteristics of epithelial tissue: Epithelial tissue is avascular, meaning it does not contain blood vessels. Nutrients and waste exchange occur through diffusion from underlying connective tissues.

Recognize the locations of epithelial tissue: It is not limited to external surfaces but is also found lining internal cavities, organs, and structures such as the digestive tract, respiratory tract, and blood vessels.

Examine the arrangement of epithelial cells: Epithelial cells are tightly packed with minimal extracellular space, forming continuous sheets that act as protective barriers.

Identify the defining feature of epithelial tissue: Epithelial tissue always has a free surface exposed to either the external environment or an internal cavity, which is a key characteristic of this tissue type.

Conclude that the correct statement is: 'Epithelial tissue always has a free surface exposed to the body exterior or to an internal cavity,' as this aligns with the fundamental properties of epithelial tissue.