1. Tissues of the Human Body
Saturday, September 15, 2018Saturday, September 15, 2018

2. Tissues
Groups of cells perform specialized functional and structural roles within the body.
Cells within the same tissue are quite similar.

3. Four Types of Tissue 2. Connective Tissue 1. Epithelial Tissue
(cover and line)
2. Connective Tissue
(support, bind, and connect)

4. 3. Muscle Tissue
(contract for movement)
4. Nervous Tissue
(control & communicate)

5. Characteristics of Epithelial Tissue
Covers all free body surfaces.
Major tissue of glands.
Lack blood vessels.
Has little intercellular material.

6. Functions of Epithelial Tissue
Protection – skin, respiratory tract lining
Secretion – glands
Absorption – stomach and small intestines
Sensory Perception

7. Classification of Epithelial Cells
1. Done according to the number of cell layers
simple – one layer
stratified – more than one layer
2. Done according to the shape of the cells
squamous, cuboidal, columnar
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8. Simple Squamous Epithelium
A single layer of flat cells
Lines the body cavities
Lines the lungs and capillaries

9. Simple Cuboidal Epithelium
A single layer of cube-like cells
Seen in many types of glands and their ducts
Also seen in the walls of kidney tubules

10. Simple Columnar Epithelium
A single layer of tall cells
Have 3 common modifications:
1 goblet cells – cells that produce mucus that
coats the epithelial membrane
2. cilia
3. microvilli
Associated with stomach, intestine, uterine, and respiratory tract

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12. Pseudo-stratified Columnar Epithelium
A single layer of irregularly shaped columnar cells that appear to be stratified due to the cells having varying heights and the nuclei being at various locations.
Found in the lining of the respiratory tract and the male urethra

13. Stratified Squamous Epithelium
Cells at the free edge are squamous and cells closer to the basement membrane are cuboidal or columnar
Found in places where friction is common:
Outer layer of skin
Throat
Anal canal

14. Stratified Cuboidal and Columnar Epithelium
Rare in the human body
Found mainly in ducts of large glands

15. Transitional Epithelium
Modified, simple squamous epithelium
The shape of the cells depends on the amount of stretching

16. Identify the following Epithelial tissues.
Simple cuboidal
Stratified squamous
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17. Identify the following Epithelial tissue.
Transitional Epithelium
Distended
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18. Identify the following Epithelial tissues.
Simple columnar
Pseudo-stratified columnar
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19. Connective Tissue

20. Characteristics of Connective Tissue
Consists of cells and considerable intercellular material.
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21. Functions of Connective Tissue
1.Support, Protection, and Connections.
2.Stores fat.
3.Produces blood cells.
4.Provides protection against infection.
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22. Types of Connective Tissue
Adipose (AKA: fat)
Cartilage
Bone
Blood
Tendon and Ligaments
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23. 1. Adipose Tissue (fat)
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24. 2. Cartilage
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25. 3. Bone
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26. 4. Blood
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27. 5. Tendons and Ligaments
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28. Muscle Tissue
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29. Characteristics of Muscle Tissue
Contractile tissue that moves parts attached to it.
Composed of specialized cells that are able to contract and relax.
Connect to bones by tendons.
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30. Types of Muscle Tissue
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31. 1. Skeletal- Attached to bones and under voluntary control.
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32. 2. Smooth- Found in the walls of hollow organs and involuntarily controlled.
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33. 3. Cardiac- Found only in the heart and involuntarily controlled.
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34. Nervous Tissue
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35. Characteristics of Nervous Tissue
Conducts electrical impulses.
Conveys information from one area of the body to another.
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36. Nerve Cell
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