SKIN AND BODY MEMBRANES BODY MEMBRANES Function of

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=_moyp. Mx 05 Fw https: //www. youtube. com/watch? v=v. KIRWY-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 –