Table of contents

1. Introduction to Anatomy & Physiology5h 40m
2. Cell Chemistry & Cell Components12h 37m
3. Energy & Cell Processes10h 7m
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 Blood1h 22m
18. The Heart1h 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 Balance Coming soon
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity Coming soon

4. Tissues & Histology

Characteristics of Epithelial Tissue

Anatomy & Physiology

4. Tissues & Histology

Characteristics of Epithelial Tissue

Erin C. Amerman - 2nd Edition

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

c. Epithelial tissue is highly vascular.

Verified step by step guidance

Understand the definition of epithelial tissue: Epithelial tissue is a type of tissue that covers the surfaces of the body, lines cavities, and forms glands.

Recall the characteristics of epithelial tissue: One key characteristic is that it is avascular, meaning it does not contain blood vessels.

Evaluate the statement: The statement 'Epithelial tissue is highly vascular' is false because epithelial tissue is avascular.

Correct the false statement: A true statement would be 'Epithelial tissue is avascular.'

Summarize the correction: Epithelial tissue relies on diffusion from underlying connective tissues for nutrients and waste exchange due to its avascular nature.

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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 that form protective layers on surfaces and cavities. It serves various functions, including protection, absorption, secretion, and sensation. Epithelial tissue is classified based on cell shape and the number of layers, such as simple or stratified.

Vascularity

Vascularity refers to the presence of blood vessels within a tissue. Tissues that are highly vascularized have a rich supply of blood vessels, which facilitates the transport of nutrients and oxygen. In contrast, epithelial tissue is avascular, meaning it lacks blood vessels and relies on diffusion from underlying connective tissues for nutrient supply.

True/False Statements

True/false statements are assertions that can be evaluated for their accuracy. In the context of the question, understanding how to assess the truthfulness of a statement involves knowledge of the characteristics of the subject in question—in this case, the properties of epithelial tissue. Correcting false statements requires identifying the inaccuracies and providing factual information.

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Related Practice

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. Epithelial tissues are classified by cell shape and the number of cell layers.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. Epithelial tissues function in protection, immune defenses, secretion, transport, and sensation.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. Keratinocytes begin life in the stratum corneum and gradually are pushed into the stratum basale.

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Textbook Question

Imagine that a disease turns the simple epithelia of the lungs, kidney tubules, and intestines into keratinized stratified squamous epithelia. What effect would this change in form have on the functions of these tissues?

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Textbook Question

Describe the roles of each of the following components of the ECM:

e. Glycoproteins (cell-adhesion molecules)

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Multiple Choice

Most cancers develop in epithelial tissues. Which epithelial tissue characteristic makes them prone to cancer?

Together the basal lamina and the reticular lamina make up the _____________________. The basal lamina is produced by the _________________, while the reticular lamina is produced by the ____________________.

A student scratched herself accidentally. What piece of evidence would suggest the scratch went through the epithelium (outermost layers of her skin) and reached the underlying connective tissue?

The epithelial tissue in the small intestine is specialized to absorb nutrients. Why would tight junctions be important in this function?

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