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

Introduction to Epithelial Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Epithelial Tissue

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Multiple Choice

Which statement is true about nearly all epithelial tissue?

All epithelial tissue produces specialized secretions.

All epithelial tissue has one surface that is adjacent to an open space.

All epithelial tissue consists of a thick layer of cells in order to provide protection.

All epithelial tissue allows for the diffusion of molecules into other adjacent tissues.

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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.

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

Scar tissue is a variety of a. epithelium, b. connective tissue, c. muscle tissue, d. nervous tissue, e. all of these.

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Textbook Question

What is the function of macrophages?

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Textbook Question

In what ways are adipose tissue and bone similar? How are they different?

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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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Multiple Choice

When considering an internal organ like the heart or liver, based on what you know about epithelial tissue, do you think that most of the tissue that makes up that organ would be epithelial tissue or some other kind of tissue?

A nutrient in the small intestine is absorbed into the bloodstream. In doing so, it moves from being dissolved in the chyme present in the small intestine to being dissolved in the plasma of the blood. How many times did the nutrient pass through epithelial tissue when moving from the intestine to the blood?

Which of the following epithelial tissue types is best adapted for the rapid transport of materials across its membranes?

Polarity is a property of all normal epithelial tissues.