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Skin and body membranes

Chapter 3. Skin and body membranes. 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

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Skin and body membranes

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  1. Chapter 3 Skin and body membranes

  2. 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 Membranes

  3. Protection • Mechanical damage • Chemical damage • Bacterial damage • UV radiation effects • Thermal damage • Desiccation • Thermoregulation • Excretion of urea and uric acid • Vitamin D synthesis Integumentary system functions

  4. Integumentary system structure • Epidermis • Dermis • hypodermis

  5. epidermis • Stratum basale (stratum germinativum) • Stratum spinosum • Stratum granulosum • Stratum lucidum • Stratum corneum

  6. dermis • Papillary layer • Areolar connective tissue • Free nerve endings • Meissner’s corpuscles • Reticular layer • Irregular connective tissue • Blood vessels • Pacininan corpuscles • Sebaceous glands • Sweat glands

  7. glands • Sebaceous • Sweat

  8. Hair and hair follicles • Hair • Matrix =growth zone • Papilla =blood vessels • Melanocytes =color • Hair follicle • Epidermal sheath • Medulla • Cortex • Cuticle • Arrectorpili

  9. nails • Free edge • Nail fold • Cuticle • Nail bed • Nail matrix =growth zone

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

  11. Athletes foot Boils and carbuncles Contact dermatitis Impetigo Psoriasis Infections and allergies

  12. Basal cell carcinoma • Squamous cell carcinoma • Malignant melanoma • ABCD Rule • Asymmetry • Border irregularity • Color • Diameter Skin cancer

  13. Systems in sync

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