1. Animal Tissues
A Quick Introduction

2. Tissue Categories
Def- Group of cells that work together to perform a specific function
Categories
Connective tissue
Epithelial tissue
Muscle tissue
Nervous tissue

3. Connective tissue Composed of both cells and exogenous matrix material
Usually holds other tissues together
Includes osseous tissue (bone) and blood
Displays a variety of appearances

4. Connective tissues

5. More Connective Tissues

6. Epithelial Tissue Covers surfaces and lines cavities Protect, secrete
3 major shapes
Squamous- flat
Cuboidal
Columnar
Major arrangements
Simple
Stratified
Pseudostratified
Basal membrane

7. Epithilial Tissue Types

8. Muscle Tissue Contractile tissue
Contains protein fibers that mediate movement
3 major types
Cardiac
Skeletal
Smooth

9. Cardiac Muscle Tissue Found only in the heart Striations
Intercalated discs
Branched arangement
Automaticity

10. Skeletal Muscle Tissue
Moves bones
Striations
Peripheral nuclei
Elongated cells
Parallel arrangment

11. Smooth Muscle Tissue Involuntary movement of soft tissues Non-striated
Arteries
Intestines
Bladder
Non-striated
Spindle shaped

12. Nervous Tissue Neurons Glial cells display an action potential
Elongated, 3 parts
Dendrite, soma, axon
Transmit impulses
Glial cells
Support neurons
Some insulate neurons

13. Nervous tissue

14. Summary
Tissues are groups of cells that work together to perform a specific function
Tissues come in a wide variety of types
Each type has characteristics that allow its identification
The colors seen in tissue samples are artificial and due to the staining technique used. Identification must be made based on more consistent characteristics