med term chapter 5 fxn systems

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Author:
jennnewton
ID:
99489
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med term chapter 5 fxn systems
Updated:
2011-09-02 12:07:41
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med term
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Description:
fxns and description of integumentary system
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  1. Primary fxn/ description of
    skin
    • Protection
    • Regulation
    • Sensation
    • Secretion
  2. Primary fxn/ description of
    Epidermis
    Outer protective covering of the body that can be divided into five strata (layers)
  3. Primary fxn/ description of
    Stratum germinativum
    • Innermost epidermal layer responsible for regeneration of the epidermis
    • contains melanin
  4. Primary fxn/ description of
    Melanin
    • a pigment that gives color to the skin formed in Stratum germinativum layer
    • the more aboundant the darker the color of the skin
  5. Primary fxn/ description of
    Stratum spinosum
    • Means spiny layer
    • each time a stem cell divides one of the daughter cells is pushed into this layer
    • contains langerhans cells
  6. Primary fxn/ description of
    Langerhans cell
    responsible for stimulating a defense against invading microoranisms and suuperficial skin cancers
  7. Primary fxn/ description of
    Stratum granulosum
    large amonts of keratin
  8. Primary fxn/ description of
    keratin
    • a protein substance
    • basic structural component of hair and nails
  9. Primary fxn/ description of
    stratum lucidum
    • present in thick skin of the palms and soles
    • cells are flattened densely packed and filled with keratin
  10. Primary fxn/ description of
    stratum corneum
    • outermost horny layer consisting of dead cells
    • cells active in the keratinization process
    • forms protective covering for the body
  11. Primary fxn/ description of
    keratinization process
    the cells lose their nuclei and become hard or horny
  12. Primary fxn/ description of
    dermis
    nourishes the epidermis provides strength and supports blood vessels
  13. Primary fxn/ description of
    papillae
    produce ridges that are ones fingerprints
  14. Primary fxn/ description of
    subcutaneous tissue
    supports nourishes insulates and cushions the skin
  15. Primary fxn/ description of
    hair
    • provides sensation and some protection for the head,
    • around the eyes nose and ears filters out foreign particles
  16. Primary fxn/ description of
    nails
    protects ends of fingers and toes
  17. Primary fxn/ description of
    sebaceous glands
    lubricates the hair and skin
  18. Primary fxn/ description of
    sudoriferous glands
    • secretes sweat or perspiration which helps to cool the body by evaporation
    • also rids the body of waste

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