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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3:14 minutes

Problem 1f

Textbook Question

Identify the six types of epithelial tissue shown in the drawing below.
f. ___

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Examine the drawing carefully and identify the shape of the cells in each tissue type. Epithelial tissues are classified based on the shape of their cells (squamous, cuboidal, or columnar) and the number of layers (simple or stratified).

Determine if the epithelial tissue is 'simple' (a single layer of cells) or 'stratified' (multiple layers of cells). This can be observed by counting the layers of cells in the drawing.

For each tissue type, identify the cell shape: Squamous cells are flat and thin, cuboidal cells are cube-shaped, and columnar cells are taller than they are wide.

Check for any special features in the drawing, such as cilia (tiny hair-like structures) or microvilli (small projections), which may indicate specialized types like ciliated columnar epithelium.

Label each tissue type based on the observations above. For example, if the tissue has a single layer of flat cells, it is 'simple squamous epithelium'; if it has multiple layers of cube-shaped cells, it is 'stratified cuboidal epithelium'.

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Key Concepts

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

Epithelial Tissue

Epithelial tissue is one of the four primary types of tissue in the body, characterized by closely packed cells with minimal extracellular matrix. It serves various functions, including protection, absorption, secretion, and sensation. Epithelial tissues are classified based on cell shape (squamous, cuboidal, columnar) and the number of layers (simple, stratified, pseudostratified).

Types of Epithelial Tissue

There are six main types of epithelial tissue: simple squamous, simple cuboidal, simple columnar, stratified squamous, stratified cuboidal, and transitional epithelium. Each type has distinct structural characteristics and functions, such as facilitating diffusion in simple squamous or providing protection in stratified squamous. Understanding these types is crucial for identifying their roles in various organs.

Identification of Epithelial Tissue

Identifying epithelial tissue involves examining the cell shape, arrangement, and the presence of specialized features like cilia or keratin. Microscopic examination can reveal whether the tissue is simple or stratified and the specific type based on the characteristics of the cells. This identification is essential for understanding tissue function and its implications in health and disease.

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Related Practice

Textbook Question

Identify the six types of epithelial tissue shown in the drawing below.

a. __

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Textbook Question

Identify the six types of epithelial tissue shown in the drawing below.

b. ___

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Textbook Question

Identify the six types of epithelial tissue shown in the drawing below.

d. ___

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Textbook Question

Identify the six types of epithelial tissue shown in the drawing below.

e. ___

Textbook Question

Which of the following epithelia most easily permits diffusion?

(a) Stratified squamous

(b) Simple squamous

(d) Simple columnar

Textbook Question

What are the four essential functions of epithelial tissue?

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Textbook Question

In adults, over 90% of all cancers arise in epithelium. Such cancers are called carcinomas, or adenomas (adenocarcinomas) if they arise in glandular epithelia. In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Why do you think this is so?

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Textbook Question

In adults, over 90% of all cancers are either adenomas (adenocarcinomas) or carcinomas. In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Which one of the four basic tissue types gives rise to most cancers? Why do you think this is so?

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Identify the six types of epithelial tissue shown in the drawing below. f. ___

Key Concepts

Epithelial Tissue

Types of Epithelial Tissue

Identification of Epithelial Tissue

Watch next

Identify the six types of epithelial tissue shown in the drawing below.
f. ___