1. Challenge Problem- Identify the types of epithelial tissue below: hint- look at the surface cells

2. Tissues: Connective Tissue
Chapter 3
Separate into Different types
Bone, cartilage
loose(areolar-adipose-reticular),
dense (tendons, ligaments)
blood

3. Connective Tissue Found everywhere in the body
Includes the most abundant and widely distributed tissues
Functions
Binds body tissues together
Supports the body
Provides protection
Slide 3.53
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4. Connective Tissue Characteristics
Variations in blood supply
Some tissue types are well vascularized
Some have poor blood supply or are avascular
Extracellular matrix
Non-living material that surrounds living cells
Slide 3.54
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5. Extracellular Matrix Two main elements
Ground substance – mostly water along with adhesion proteins and polysaccharide molecules
Fibers
Produced by the cells
Three types
Collagen fibers
Elastic fibers
Reticular fibers
Slide 3.55
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6. Connective Tissue Types
1. Bone (osseous tissue)
Composed of:
Bone cells in lacunae (cavities)
Hard matrix of calcium salts
Large numbers of collagen fibers
Function: protect and support the body
Figure 3.18a
Slide 3.56
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7. Osseous Connective Tissue

8. Challenge Problem 1. ‘Oss’ at the beginning of a word means _______
2. Give three jobs of connective tissue
3. _________ are the spaces in the extracellular matrix where bone cells live
4. What are some problems if ligaments rupture?

9. Connective Tissue Types
2. Cartilage
Hyaline cartilage
Most common cartilage
Composed of:
Abundant collagen fibers
Rubbery matrix
Entire fetal skeleton is hyaline cartilage
Figure 3.18b
Slide 3.57
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10. Hyaline Cartilage

11. Connective Tissue Types
Elastic cartilage
Provides elasticity
Example: supports the external ear
Slide 3.58a
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12. Elastic Cartilage

13. https://youtu.be/LzmoIqbxJ_c

14. Connective Tissue Types
Fibrocartilage
Highly compressible
Example: forms cushion-like discs between vertebrae
Figure 3.18c
Slide 3.58b
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15. Fibrocartilage

16. Connective Tissue Types
3. Dense connective tissue
Main matrix element is collagen fibers
Cells are fibroblasts
Examples
Tendon – attach muscle to bone
Ligaments – attach bone to bone
Figure 3.18d
Slide 3.59
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17. Adrian Peterson

18. Copied from news article on Bowman
The MCL extends from the end of the thigh bone to the top of the shin bone on the inside of the knee. Although tears to the MCL are common in sports, most MCL injuries respond well to conservative (non-surgical) treatment.
The MCL gets more blood supply than other ligaments, like the ACL/PCL in the knee.
Increased blood flow means more nutrients, proteins and oxygen to the area. Simply put, MCL tears heal quicker due to the nature and location of the ligament.

19. Dense Connective Tissue

20. Connective Tissue Types
4. Loose Connective tissue
Areolar connective tissue
Most widely distributed connective tissue
Soft, pliable tissue
Contains all fiber types
Can soak up excess fluid
Figure 3.18e
Slide 3.60
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21. Areolar Connective Tissue

22. Connective Tissue Types
Adipose tissue
Matrix is an areolar tissue in which fat globules predominate
Many cells contain large lipid deposits
Functions
Insulates the body
Protects some organs
Serves as a site of fuel storage
Figure 3.18f
Slide 3.61
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23. Adipose Tissue

24. Connective Tissue Types
Reticular connective tissue
Delicate network of interwoven fibers
Forms stroma (internal supporting network) of lymphoid organs
Lymph nodes
Spleen
Bone marrow
Figure 3.18g
Slide 3.62
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25. Reticular Connective Tissue

26. Connective Tissue Types
5. Blood
Blood cells surrounded by fluid matrix
Fibers are visible during clotting
Functions as the transport vehicle for materials
Figure 3.18h
Slide 3.63
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27. Blood

28. Challenge Problem
Through which tissue does oxygen and carbon dioxide travel to get to all parts of the body?
The spleen and lymph nodes are made of _______ connective tissue.
In which organelle of cells of adipose tissue are droplets of fat stored?
What type of connective tissue are intervertebral discs made?

29. Quick Quiz
Name two functions of Connective Tissue

30. Challenge Problem- col, 6min
1. Identify one characteristic of areolar connective tissue.
2. Adipose is also known as _____
3. Muscle to bone=
4. Bone to bone=
5. In which part of cells of adipose tissue are droplets of fat stored?
6. You are a doctor looking at a piece of intervertebral cartilage under a microscope. What type of connective tissue is it?