Chapter 3

 Cutaneous –dry membrane of stratified squamous epithelia and loose connective tissue  Mucous –mucous membrane of epithelia and areolar tissue  Serous –produces serous fluid, made of simple squamous epithelia and areolar connective tissue  Synovial –produces synovial fluid, made of areolar connective tissue, does not contain epithelial tissue

 Protection  Mechanical damage  Chemical damage  Bacterial damage  UV radiation effects  Thermal damage  Desiccation  Thermoregulation  Excretion of urea and uric acid  Vitamin D synthesis

 Epidermis  Dermis  hypodermis

 Stratum basale (stratum germinativum)  Stratum spinosum  Stratum granulosum  Stratum lucidum  Stratum corneum

 Papillary layer  Areolar connective tissue  Free nerve endings  Meissner’s corpuscles  Reticular layer  Irregular connective tissue  Blood vessels  Pacininan corpuscles  Sebaceous glands  Sweat glands

 Sebaceous  Sweat

 Hair  Matrix =growth zone  Papilla =blood vessels  Melanocytes =color  Hair follicle  Epidermal sheath  Medulla  Cortex  Cuticle  Arrector pili

 Free edge  Nail fold  Cuticle  Nail bed  Nail matrix =growth zone

 Caused by chemical, electrical, heat, UV  Rule of Nines  Measure of dehydration  Body is divided into 11 areas  1 st degree –epidermal damage  2 nd degree –epidermis and upper dermis  3 rd degree –entire thickness of skin  Critical Burns  25 % of body =2 nd degree  10% of body =3 rd degree  3 rd degree of face, hands, feet

 Athletes foot  Boils and carbuncles  Contact dermatitis  Impetigo  Psoriasis

 Basal cell carcinoma  Squamous cell carcinoma  Malignant melanoma  ABCD Rule  Asymmetry  Border irregularity  Color  Diameter