1. Do Now
Make observations about the two pictures below. B A

2. Connective Tissues
Chapter 5
Section 3

3. Objectives
List the various types of connective tissue, and where they are located in the body.
Identify the major cells found within connective tissue.

4. Connective Tissue: Functions
Establish structural framework
Provide support and protection
Defend against pathogens
Binds structures together
Fill spaces
Store fat
Produce blood cells

5. Connective Tissues: Characteristics
Never exposed to the environment
Vascular
Good blood supply and well nourished
Cells are not as compacted as epithelial cells
Has an extracellular matrix:
Consists of protein fibers and ground substance
Can be solid, semisolid, or liquid.

6. Characteristics Continued
Specialized cells:
Prefixes:
Fibro  Fiber
Chondro  Cartilage
Osteo  Bone
Suffixes:
Blasts  Create
Clasts  Breakdown
Cytes Maintain(cells)

7. Major Cell Types: Fixed Cells
Fixed Cells: reside in tissue for extended period of time
Fibroblasts:
Most common and most abundant fixed cell
Large and star-shaped
Secrete proteins into matrix to produce fibers

8. Other Cell Types Adipocyte: Fat Cell Chondrocyte: Cartilage Cell
Chondroblast:
Fat Cell
Cartilage Cell
Builds Cartilage

9. Other Cell Types Continued
Osteoblast:
Osteoclast:
Osterocyte:
Builds Bone
Removes Bone
Bone Cell

10. Other Cell Types Continued
Plasma Cell: Produces Antibodies
Platelet: Help with blood clotting
Red Blood Cell: Delivers oxygen to the body

11. Do Now
You have a patient coming to you complaining about pain in their antebrachial. You conduct an X- ray and see that there is a stress fracture.
What type of cells will help build new bone tissue, and which cells will help maintain it?

12. Objectives
List the various types of connective tissue, and where they are located in the body.
Identify the major cells found within connective tissue.

13. Connective Tissue Proper
Loose CT (Areolar)
Open fiber framework
Highly Vascularized
Adipose
Dense CT
Tightly packed fibers
Poorly vascularized
Two types:
Regular
Irregular

14. 1. Loose (Areolar) CT
Forms delicate, thin membranes throughout the body.
Highly Vascularized and the Most Common
Functions:
Binds skin to organs
Nourishes the epithelium
Fills space between muscles
Locations:
Between muscles
Beneath epithelium
Cells: Fibroblasts

15. 2. Adipose CT
Certain cells (adipocytes) store fat in cytoplasm and enlarge.
Crowd other cells to form adipose tissue
Functions:
Energy Storage
Padding (Protection) and Insulation
Locations:
Beneath skin and Between muscles
Behind the Eyeballs
Around the Kidneys
Surface of heart
Cells: Adipocytes

16. Fibers are parallel aligned with direction of force (1 direction!)
3. Dense CT: Regular
Fibers are parallel aligned with direction of force (1 direction!)
Functions
Strong (withstand stretching)
Stabilize position
Locations
Tendons
Ligaments
Cells: Fibroblasts

17. 3. Dense CT: Irregular Mesh of Fibers Functions: Locations:
Resist tension from many directions
Protection
Locations:
Dermis (Deep Skin)
Around organs
Cells: Fibroblasts

18. Matrix= Plasma (fluid)
Specialized CT: Blood
Matrix= Plasma (fluid)
Functions
Transport nutrients , wastes, and defense cells throughout the body
Maintain Homeostasis (Balance)
Locations
Contained in blood vessels
Cells: RBC, WBC, and Platelets

19. Specialized CT: Cartilage
Rigid tissue with no blood vessels or nerves (heals very slowly!)
Functions:
Attachment and framework
Support and Protection
Locations:
Between vertebrae
External Ear
Nose
Ends of bones
Cells: Chondrocytes

20. Most Rigid CT. High Vascularized (Can Repair Itself!)
Specialized CT: Bone
Most Rigid CT. High Vascularized (Can Repair Itself!)
Functions:
Support and Protection
Framework
Locations:
Bones
Cells: Osteocytes

21. Activity: Try to identify the various types of tissues!

22. A
Tissue #1

23. Tissue #2

24. A
Tissue #3

25. A B C
Tissue #4

26. Tissue #5

27. A
Tissue #6

28. Loose (Areolar) Tissue

29. Dense Regular

30. A
Adipose Tissue

31. A B C
Blood

32. Dense Irregular

33. A
Bone