Power Point Lecture Slides prepared by Vince Austin

Power. Point® Lecture Slides prepared by Vince Austin, University of Kentucky Tissue: The Living Fabric Part D Human Anatomy & Physiology, Sixth Edition Elaine N. Marieb Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings 4

Tissue Trauma § Repair occurs in two major ways: § Regeneration: replacement of dead cells § Fibrosis: The growth of fibers (scar tissue) The type of repair that occurs depends upon the severity of the injury and the tissue that was damaged. Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Tissue Trauma § Causes inflammation, characterized by: § Dilation of blood vessels § Increase in vessel permeability § Redness, heat, swelling, and pain Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Tissue Repair § Organization and restored blood supply § The blood clot is replaced with granulation tissue Granulation Tissue is delicate pink tissue that contains capillaries and other fibers. Figure 4. 12 a Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Tissue Repair § Regeneration and fibrosis § Surface epithelium regenerates and the scab detaches § Fibrous tissue matures and begins to resemble the adjacent tissue Figure 4. 12 b Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings

Tissue Repair § Results in a fully regenerated epithelium with underlying scar tissue Figure 4. 12 c Copyright © 2004 Pearson Education, Inc. , publishing as Benjamin Cummings