PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings PART C 3 Cells and Tissues
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Body Tissues Tissues Groups of cells with similar structure and function Four primary types Epithelial tissue (epithelium) Connective tissue Muscle tissue Nervous tissue
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Epithelial Tissues Locations Body coverings & organ linings Cells fit closely together and often form sheets Functions Protection Absorption Filtration Secretion
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Classification of Epithelia Number of cell layers Simple—one layer Stratified—more than one layer Figure 3.17a
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Classification of Epithelia Shape of cells Squamous flattened Cuboidal cube-shaped Columnar column-like Figure 3.17b
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Simple squamous Single layer of flat cells Used for rapid diffusion, forms membranes Found: Lines lungs (air sacs) & capillaries
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Figure 3.18a
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Simple cuboidal Single layer of cube-like cells Location: Walls/tubules of kidney, lines pancreas, salivary gladns Fnx: secretes
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Figure 3.18b
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Simple columnar Single layer of tall cells Often includes mucus-producing cells Found: Lining digestive tract, stomach
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Figure 3.18c
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Stratified Epithelia Stratified squamous Found as a protective covering where friction is common Locations: Skin, Mouth, Esophagus, Vagina
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Stratified Epithelia Figure 3.18e
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Pseudostratified columnar Single layer, but some cells are shorter than others, some with cilia Cilia used to push substances across surface Found: respiratory tract, trachea May function in absorption or secretion
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Simple Epithelia Figure 3.18d
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Stratified Epithelia Transitional epithelium Shape of cells depends upon the amount of stretching Found: Lining of the urinary/bladder
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Stratified Epithelia Figure 3.18f