PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings 4 Skin and Body Membranes

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings BODY MEMBRANES  =  Locations:  Cover  Line  tissue:  Epithelial  Connective

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings 1. Mucous Membranes  Stratified squamous or Simple columnar & areolar  Locations:  Mucus

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings 2. Serous Membranes  Simple squamous & Areolar  Locations  serous fluid:  Double membrane  Specific types  Peritoneum:  Pleura:  Pericardium:  visceral vs. parietal

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings 3. INTEGUMENTARY SYSTEM  Functions: see Table 4.1  Layers: 2 and 1 below  Epidermis  Dermis  Subcutaneous (Hypodermis)

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Structure Figure 4.3

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Functions Table 4.1 (1 of 2)

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Functions Table 4.1 (2 of 2)

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings EPIDERMIS  Tissue: Layers  Stratum basale ("germinativum)  Location & # layers  Below is  Mitosis  Every days  Cells:  Keratinocytes  Melanocytes: produce _________

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings  Stratum spinosum  St. granulosum  Cells flatter  St. lucidum-Dead  Only thick skin:

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Epidermis …  St. corneum-Dead  Outermost  # layers:  cells are filled with _________ & __________  Function

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings DERMIS  Overall  Fibers:  Blood vessls  Temperature  2 layers

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings 2 Layers of the Dermis …  Papillary layer  Location  Tissue: Areolar  Dermal Papillae:  pain receptors  touch receptors

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings  Reticular layer  Dense Connective Tissue  Blood vessels  Sweat and oil glands  Deep pressure receptors

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings SUBCUTANEOUS TISSUE– HYPODERMIS  Not part of the skin  Anchors skin  Areolar & adipose tissue

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings SKIN APPENDAGES  Sebaceous glands  Produce:  Functions

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  Sweat glands  Produce  Composition: water & salts, acidic  Functions:  Heat  Wastes  Bacteria

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  Hair  Produced by:  Hair follicle: sheath surround hair root  Matrix: cells that produce hair  Color from:  Arrector pili muscle

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin Figure 4.8

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Homeostatic Imbalances  Infections & Allergies– STUDENTS DO all terms on page 123

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Homeostatic Imbalances  Burns  caused by  Associated dangers  Dehydration  Electrolyte imbalance  Circulatory shock

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Rule of Nines  Extent of burns  11 body areas  Each area = 9% surface area

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Severity of Burns  First-degree burns  epidermis damaged  Skin = red, swollen  Second-degree burns  Epidermis & upper dermis  Skin = … blisters  Third-degree burns  entire skin  Skin = gray-white or black

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Critical Burns  Critical:  Over 25% = second-degree  Over 10% = third-degree  face, hands, or feet = third degree

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer  Cancer—abnormal cell mass  Classified  Benign  Malignant  Metastasizes:  most common type:

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer Types  Basal cell carcinoma  Least malignant  Most common  Arises from stratum basale  Dome shaped with ulcer

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer Types  Squamous cell carcinoma  Metastasizes if not removed  good chance of cure  sun-induced  from stratum spinosum

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer Types  Malignant melanoma  deadly  melanocytes  Metastasizes  Detection ABCD

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings ABCD Rule  A =  B =  C =  D =