1. TISSUES

2. Tissues are a group of cells that have a specialized structure and function. They commonly combine to form organs.

3. 4 TYPES OF TISSUES EPITHELIAL CONNECTIVE MUSCLE NERVOUS

4. EPITHELIAL TISSUE Epithelial tissue originates from all 3 primary germ layers. Can be divided structurally or functionally.

5. FUNCTIONAL DIVISIONS OF EPITHELIAL TISSUE For covering and lining. To make up multicellular organs

6. STRUCTURAL DIVISIONS OF EPITHELIAL TISSUE Simple- single layer of cells on a basement membrane. Stratified- 2 or more layers of cells on a basement membrane.

7. 4 TYPES OF SIMPLE EPITHELIAL TISSUE 1. SQUAMOUS 2. CUBOIDAL 3. COLUMNAR 4. PSEUDOSTRATIFIED COLUMNAR

8. SIMPLE SQUAMOUS EPITHELIAL TISSUE Made of a single layer of flattened cells on a basement membrane

9. SIMPLE CUBOIDAL EPITHELIAL TISSUE Made of a single layer of square or “cube” shaped cells attached to a basement membrane.

10. SIMPLE COLUMNAR EPITHELIAL TISSUE Made of a single layer of long or “column” shaped cells attached to a basement membrane

11. PSEUDOSTRATIFIED CILIATED COLUMNAR EPITHELIAL TISSUE (PSCCE) Looks striated, but isn’t. Cells are longer, but each one actually touches the basement membrane, making it a type of simple epithelium. Is only found lining the trachea.

12. SIMPLE EPITHELIAL TISSUE

13. 4 TYPES OF STRATIFIED EPITHELIAL TISSUE Stratified Squamous Stratified Cuboidal Stratified Columnar Transitional

14. STRATIFIED SQUAMOUS EPITHELIAL TISSUE Made of a layers of cells, the top layer being flat. Only the bottom layer is attached to the basement membrane.

15. STRATIFIED CUBOIDAL EPITHELIAL TISSUE Made of layers of cells with the top layer being more cube shaped.

16. STRATIFIED COLUMNAR EPITHELIAL TISSUE Made of layers of cells with the top layer being more columnar shaped.

17. TRANSITIONAL EPITHELIAL TISSUE Layers of cells with the top layer being a large cell that can change its shape. Dome Cells Is found lining the urinary bladder.

18. TRANSITIONAL EPITHELIAL TISSUE

19. FUNCTIONS OF EPITHELIAL TISSUE Protection Secretion Excretion Transport Absorption Sensory Reception

20. CONNECTIVE TISSUE

21. Connective Tissue is the tissue that holds the body together and provides for support for the body.

22. CONNECTIVE TISSUE Two Types of Connective Tissue: 1.General 2.Special

23. GENERAL CONNECTIVE TISSUE General connective tissue is found throughout the body and is used to connect different body parts.

24. GENERAL CONNECTIVE TISSUE Loose General Connective Tissue (Areolar Tissue & Adipose Tissue) * Dense General Connective Tissue (Umbilical cord, tendons & dermis)

25. SPECIAL CONNECTIVE TISSUE Special Connective Tissue has special functions. Examples include: Cartilage Spongy Bone (Marrow) Blood Lymph & Hematopoetic Tissue

26. INTERCELLULAR SUBSTANCES OF CONNECTIVE TISSUE Fibers Cells Amorphous Ground Substance

27. 3 TYPES OF FIBERS OF CONNECTIVE TISSUE COLLAGENOUS ELASTIC RETICULAR

28. AMORPHOUSE GROUND SUBSTANCE The ground substance of connective tissue. It provides a matrix for the cells to adhere to. It varies in viscosity from fluid to gelatinous. The more cells present in the tissue, the less ground substance, etc.

29. FUNCTIONS OFAMORPHOUS GROUND SUBSTANCE Serves as a barrier to the spread of bacteria Serves as a medium for the diffusion of nutrients and wastes between the cells and blood.

30. MUSCLE TISSUE

31. Muscle tissue is the type of tissue used to move the body and move things within the body.

32. 3 TYPES OF MUSCLE TISSUE SMOOTH MUSCLE CARDIAC MUSCLE SKELETAL MUSCLE

33. SMOOTH MUSCLE Found in the walls of blood vessels and hollow organs. Not striated Is involuntary

34. CARDIAC MUSCLE Is associated with the heart. Is striated Is involuntary.

35. SKELETAL MUSCLE Makes up the “meat” of the body. Helps move the skeleton. Is striated Is voluntary

36. NERVOUS TISSUE

37. Tissue that is involved with irritability and conductivity. It develops from the ectoderm. Helps us be aware of and respond to our environment