Skin and body membranes

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Presentation transcript:

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 –