1. TISSUES There are different types of tissues classified according to their function. Epithelial forms the linings of passageways and glands Connective tissue forms the framework of the body Muscle tissue is for movement and forms organs Nervous tissue is to transmit impulses.

2. Epithelial Tissue Epithelial tissue is classified according to its shape and whether or not it is layered. Simple tissue is in one single layer. Stratified is in many layers.

4. SIMPLE SQUAMOUS These cells form a single layer with pointed edges that overlap for protection. They form the linings of cavities.

5. STRATIFIED SQUAMOUS These cells form the outer layer of the skin.

6. SIMPLE CUBOIDAL These cells are square in shape. Each cell is almost a perfect cube.

7. These cells form the lining of glands and are found in the kidneys.

8. STRATIFIED CUBOIDAL EPITHELIUM Stratified cuboIdal cells are more than one layer of cells

9. SIMPLE COLUMNAR The cells are commonly found in the intestines. These cells use active transport to move digested materials into the blood.

11. PSEUDOSTRATIFIED Since their nuclei are at different heights, these cells give the appearance that they are layered but in reality it is a single layer.

13. PSEUDOSTRATIFIED CILIATED COLUMNAR These cells line the trachea and upper respiratory tract

14. TRANSITIONAL EPITHELIUM This tissue consists of several layers of epithelial cells. The cells are able to expand and contract. They are found in the urinary tract especially the bladder.

15. Connective Tissue Connective tissue has a connecting function. It supports and binds other tissues. It typically has cells scattered throughout an extracellular matrix which is non-living.

16. CONNECTIVE TISSUE

17. Loose Connective Tissue This is the most common type of connective tissue in vertebrates. It holds organs in place and attaches epithelial tissue to underlying tissue. It is named according to the type of weave and fibers that it has. It contains three main fibers.

18. ELASTIC FIBER These fibers are made of elastin and are stretchable

19. Collagen Fibers These fibers consist of fibrils that are bundles of collagen molecules.

20. Reticular Fibers These fibers join connective tissue to other connective tissue

21. Loose Connective Tissue

22. Fibrous Connective Tissue This tissue consists of large amount of closely packed collagenous fibers. It is found in tendons and ligaments

23. ADIPOSE This is a loose connective tissue that stores fat in large vacuoles.

24. Cartilage This tissue is composed of closely packed collagenous fibers in a rubbery gelatinous substance called chondrin. It is found in the nose, trachea and ears as well as the end of long bones.

25. Osseous Tissue Bone is a type of mineralized connective tissue that contains collagen and calcium phosphate, a mineral crystal. Calcium phosphate gives bone its firmness.

26. BLOOD Blood is considered to be a type of connective tissue. Even though it has a different function in comparison to other connective tissues it does have an extracellular matrix.

27. SKELETAL MUSCLE Each cell is cylindrical, unbranched and contains many nuclei. The characteristic striations seen are a result of the orderly arrangement of actin and myosin filaments within the muscle cell.

28. SKELETAL MUSCLE

29. SMOOTH MUSCLE Smooth muscle features long, narrow "spindle" shaped cells with a single central, somewhat elongated, nucleus. These cells are arranged parallel to one another and do not show any striations microscopically. This type of muscle is called "involuntary" because it acts to contract and relax without conscious thought.

30. SMOOTH MUSCLE

31. CARDIAC MUSCLE Cardiac muscle shows some features of skeletal muscle and smooth muscle. Cardiac muscle is the muscle that makes up the wall of the heart. Cardiac muscle is similar to skeletal muscle in that it is striated and multinucleated, and similar to smooth muscle in that the nuclei are centrally located.

32. NEURON The neuron is the functional unit of the nervous system. All neurons have three parts. Dendrites receive information from another cell and transmit the message to the cell body. The cell body contains the nucleus, mitochondria and other organelles typical of eukaryotic cells. The axon conducts messages away from the cell body.