Skin and body membranes
Body Membranes Function of body membranes Cover body surfaces Line body cavities Form protective sheets around organs
Wound Healing Hemostasis Inflammation Proliferative Remodeling
Cutaneous Membrane Cutaneous membrane = skin
Cutaneous Membrane
Mucous Membrane Lines body cavities that open to the exterior
Mucous Membrane
Serous Membranes Lines body cavities that are not open to the exterior
Serous Membranes Visceral layer: Parietal layer:
Serous Membranes
Serous Membranes Pleura Pericardium
Connective Tissue Membrane Lines joints Secretes a lubricating fluid (Synovial membrane)
Connective Tissue Membrane
The Integumentary System The skin and the associated organs of sweat and oil glands, hairs, and nails make up the Integumentary system
Metastasis – spread of cancer to other parts of body
Cancer Treatment Videos https://www.youtube.com/watch?v=_moypMx05F w https://www.youtube.com/watch?v=vKIRWY- LMYc
Radiation Damages cellular DNA Directed at specific area Over days or weeks Side effects occur at treatment area
Chemotherapy Chemicals developed to have greatest effect on quickly dividing cells Healthy cells also damaged/killed Weakened immune system Nausea Hairloss Weight loss Anemia
The skin Fun Facts: Avg. makes up about 9-11 lbs. or 7% of your weight Regenerates every 25-45 days Every minute you lose 30,000-40,000 dead skin cells
Protection
Maintaining Body Temp
Excretion
Irritability/Sensitivity
Skin Structure (EDH) Epidermis (epithelial) Dermis (fibrous) Hypodermis (subcutaneous – fat)
Skin Structure (EDH)
Skin Structure Epidermis—outer layer Stratified squamous epithelium
Skin Structure Dermis Hypodermis is deep to dermis
5 Layers of the Epidermis (CLGSB) Stratum corneum Statum lucidum Stratum granulosum Stratum spinosum Statum basale
5 Layers of the Epidermis (CLGSB) Stratum basale
5 Layers of the Epidermis (CLGSB) Stratum spinosum
5 Layers of the Epidermis (CLGSB) Stratum granulosum
5 Layers of the Epidermis (CLGSB) Stratum lucidum
5 Layers of the Epidermis (CLGSB) Stratum corneum
Specialized Epidermal Cells No blood vessels found in epidermis Very few sense receptors
Specialized Epidermal Cells Melanocytes – Keratinocytes – Merkel cells – Langerhans cells –
NOTE: Thick skin- Thin skin –