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 tissue that always has an apical and a basal surface is ________ tissue.

epithelial

connective

nervous

muscle

Previous problemNext problem

Verified step by step guidance

Understand the structure and function of epithelial tissue: Epithelial tissue is characterized by having an apical surface (exposed to the external environment or internal space) and a basal surface (attached to a basement membrane). This polarity is essential for its function in protection, absorption, secretion, and filtration.

Compare epithelial tissue with other tissue types: Connective tissue provides support and connects other tissues, nervous tissue is involved in communication and signal transmission, and muscle tissue is responsible for movement. None of these have the distinct apical and basal surfaces characteristic of epithelial tissue.

Recall the definition of apical and basal surfaces: The apical surface faces the lumen or external environment, while the basal surface is anchored to the basement membrane, which separates epithelial tissue from underlying connective tissue.

Identify the correct answer based on the unique feature: Since epithelial tissue is the only tissue type that consistently has both an apical and basal surface, it is the correct answer.

Review the options provided: Confirm that epithelial tissue matches the description, while connective, nervous, and muscle tissues do not exhibit this structural polarity.