Nadia burns her hand

Integumentary system
1. Skin layers
  1. Dermis
  2. Epidermis
  3. Hypodermis
2. Functions
  1. Protection against
    1. Mechanical thermal and other physical injury
    2. Harmful agents (Acid mantle)
    3. Excessive loss of moisture
    4. Radiation (Melanin)
  2. Thermoregulation
    1. Vasodilation
    2. Vasoconstriction
      1. Controls heat loss
    3. secretion and evaporation of sweat
  3. Excretion
    1. sebaceous glands
      1. Secrete sebum
        helps maintain healthy skin
    2. Sweat glands
      1. secrete urea and uric acid
Burn
1. causes
  1. Fire
  2. Hot liquids
  3. steam
  4. Chemicals
  5. Radiation
  6. Electricity
2. Types
  1. 1st degree
    1. Damage to the epidermis only
    2. Full recovery is expected
    3. redness/pain
    4. does not require doctor visit
    5. Least severe
  2. 2nd degree
    1. Damage to the epidermis and the upper layer of the dermis
    2. Partial thickness burn
    3. Blisters appear
  3. 3rd degree
    1. Destruction of all layers of the skin
    2. Skin appears white or charred
    3. Medical emergency
    4. Full thickness burn
3. Complications
  1. Bacterial infection (Sepsis)
  2. hypovolemia
  3. Hypothermia
  4. Scar formation
  5. Bone and joint problems due to scar tissue
Cell injury
1. cells stressed so severely that they are no longer able to adapt
  1. Causes
    1. Oxygen deprivation
    2. Ageing
    3. Pathogens
    4. Toxins
    5. Physical agents
  2. Reversible cell injury
    1. Cell can regain normal morphology and function
  3. Irreversible cell injury
    1. Cell death due to severe injury
      1. Necrosis
        Morphologic changes seen in dead cells within living tissue
      2. Apoptosis
        Programmed cell death
Bacteria
1. prokaryotes that are They are classified based on size, shape, arrangement(morphology) and staining characteristics
2. Can cause infections which lead to inflammation
  1. Cardinal signs of inflammation
    1. Redness
    2. Heat
    3. Pain
    4. Swelling
    5. Loss of function

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Nadia burns her hand

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	Created by Hind Alzaabi about 3 years ago