Integumentary System Integumentary System

					Integumentary System
        Functions
        Skin color
      Skin eruptions
Functions of the Integumentary
           System
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Functions of the Integumentary
           System
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   Barrier for sun’s ultraviolet rays
   Protection against invasion of pathogens or germs.
   Holds moisture in and prevents deeper tissues from
    drying out.
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   Nerves are present in skin
   These nerves respond to pain, pressure, temperature
    (heat and cold) and touch and send a sensory
    message to the brain.
    Functions of the Integumentary
               System
Regulation of ___________________________:
   Blood vessels in skin help body retain or lose heat.
   Dilate: blood vessels get larger and allow excess heat
    to escape through the skin.
   Constrict: blood vessels get smaller and retain heat.
   Sudoriferous glands also help cool the body through
    the evaporation of perspiration.
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   Skin has tissues for the temporary storage of fat,
    glucose (sugar), water vitamins, and salts.
   Stores adipose tissue in the subcutaneous fascia,
    which is a source of energy for the body.
Functions of the Integumentary
           System
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   Certain substances can be absorbed through
    the skin, such as transdermal medications
    (nicotine patches, motion sickness patches,
    certain forms of the flu vaccine)
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   Helps the body eliminate salt, a small amount
    of body waste and excess water. (done
    through perspiration)
Functions of the Integumentary
           System
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   The skin helps in the production of
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   It uses ultraviolet rays from the sun to form an
    initial molecule of vitamin D that is
    manufactured in the liver.
                     Skin Color
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    Skin color is inherited and determined by
     pigments in the epidermis.
    ___________________________________:
     1. Brownish-black pigment
     2. Leads to a black, brown, or yellow skin tint
        depending on racial origin.
     3. Absorbs ultraviolet light to tan the skin
     4. Small concentrated areas of melanin pigment form
        freckles.
    ___________________________________:
     1. Yellowish-red pigment
     2. Also helps determine skin color.
                Skin Color
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   Absence of color pigments
   Skin has a pinkish tint
   Hair is pale yellow or white
   Eyes are red in color and very sensitive to
    light.
 Skin Color: Abnormal Colors
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   Reddish color, caused by burns or a congestion of
    blood in vessels.
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   Yellowish discoloration
   Can indicate the presence of bile in the blood as a
    result of liver or gallbladder disease.
   Also seen in certain diseases that involve the
    destruction of red blood cells.
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   Bluish discoloration, caused by insufficient oxygen.
   Associated with heart, lung and circulatory diseases.
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   Chronic poisonings.
                Skin Eruptions
_____________________ – flat spot on skin (freckles)
_____________________ – firm raised areas (pimples,
chicken pox, syphilis.)
_____________________ – blisters or sacs full of fluid (some
stages of chicken pox)
_____________________ – Sacs filled with pus (pimples)
_____________________ – dried pus and blood (scabs)
_____________________ – itchy elevated areas with an
irregular shape (hives and insect bites)
_____________________– deep loss of skin surface that may
extend into the dermis. May cause periodic bleeding and
formation of scars.

				
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