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

Stratified Epithelial Tissues

Anatomy & Physiology

4. Tissues & Histology

Stratified Epithelial Tissues

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Problem 5f

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Stratified epithelia are specialized to allow substances to cross their cells rapidly.

Verified step by step guidance

Understand the structure and function of stratified epithelia: Stratified epithelia consist of multiple layers of cells, which are primarily designed for protection rather than rapid transport of substances. This is because the multiple layers act as a barrier.

Compare stratified epithelia with simple epithelia: Simple epithelia, which consist of a single layer of cells, are specialized for processes like diffusion, filtration, and absorption, allowing substances to cross rapidly. Stratified epithelia, on the other hand, are not specialized for these functions.

Evaluate the statement: The statement claims that stratified epithelia are specialized to allow substances to cross their cells rapidly. Based on the structure and function of stratified epithelia, this statement is false.

Correct the false statement: A corrected version of the statement would be: 'Stratified epithelia are specialized for protection and are not designed to allow substances to cross their cells rapidly.'

Summarize the reasoning: The multiple layers of stratified epithelia provide a protective function, making them less suited for rapid transport of substances compared to simple epithelia, which are better adapted for such processes.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Stratified Epithelium

Stratified epithelium is a type of tissue composed of multiple layers of cells. Its primary function is to provide protection, particularly in areas subject to abrasion, such as the skin and the lining of the mouth. Unlike simple epithelium, which allows for rapid substance exchange, stratified epithelium is not specialized for this purpose.

Function of Epithelial Tissue

Epithelial tissue serves various functions, including protection, absorption, secretion, and sensation. The specific function often depends on the type of epithelium and its location in the body. For instance, simple squamous epithelium facilitates rapid diffusion and filtration, while stratified epithelium primarily focuses on protection.

Cell Permeability

Cell permeability refers to the ability of substances to pass through a cell membrane or layer of cells. In the context of epithelial tissue, simple epithelia are generally more permeable and allow for the rapid exchange of materials, while stratified epithelia are less permeable due to their multiple layers, which serve to protect underlying tissues rather than facilitate quick transport.

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