1. EPITHELIAL TISSUE (EPITHELIUM)

2. Epithelial tissue (Epithelium)  Lining, covering and glandular tissue of the body  Protection  Absorption  Filtration  Secretion

3. Epithelial tissue (Epithelium)  Examples:  Skin protects against bacteria/chemicals  Lining of the respiratory tract-cilia to sweep mucus  Kidney-epithelium absorbs and filters  Secretion-glands

4. Epithelial tissue (Epithelium)

11. Simple Squamous  Single layer of thin squamous cells  Forms membranes for filtration/exchange  Air sacs of lungs  Walls of capillaries

12. Simple Squamous

13. Simple Cuboidal  Single layer of cuboidal cells  Glands/Ducts  Salivary Glands  Ducts in Pancreas  Kidney tubules  Surface of ovaries

14. Simple Cuboidal

15. Simple Columnar  Single layer of columnar (tall) cells  Line digestive tract  Goblet cells: produce mucus

16. Simple Columnar

17. Pseudostratified (ciliated) columnar  Some cells are shorter than others  Absorption and secretion  Ciliated variety lines the respiratory tract Goblet cells make mucus Cilia move mucus

18. Pseudostratified (ciliated) columnar

19. Stratified squamous  Several layers of cells  At the top squamous and close to basement membrane (bottom) are cuboidal or columnar  Can stand friction: Esophagus Mouth skin

20. Stratified squamous

21. Transitional (stratified)  Cells at base are cuboidal or columnar, free surface varies  Tissue can stretch  Lines the: Urinary bladder Ureters Part of urethra

22. Transitional (stratified)

23. Extracellular matrix  Produced by connective tissue cells  Secreted to exterior  Ground substance, proteins and large polysaccharides  Matrix fibers  Gel like, to firm, to rock hard

24. Extracellular matrix

26. Types of Connective Tissue  Bone  Cartilage  Dense Connective Tissue  Loose Connective Tissue  Blood

27. Connective Tissue - Presentation  Research your assigned connective tissue  Description and properties of the tissue  Structure and functions  Where in the body is this tissue found? (examples)  You can write/draw on a blank slide on the board  Presentation should be at least 2-5min