blood

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beatrizbabygirl18
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8866
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blood
Updated:
2010-03-02 19:29:34
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  1. Extracellular fluid(ECF) any fluid not within cells
    Interstitial Fluid: fluid in between cells & body tissues
    Blood: plasma (ECF)
    Other ECF's: spinal, cerebral, senvial fluid
  2. Major Blood Fuctions:
    1. Trasportation: Gases, Nutrients, Waste, Hormones, Iones.
    2. Regulation: Temperature, Nutrients, Wastes, Fluid levels, Cell Contents.
    3. Protection: clots: reduce additional blood loss, form of barrier against
    microbes.
  3. Physical Characteristics of Blood:
    Normovolemic: normal blood volume
    Hypovolemic: low blood volume
    Hypervolemic: high blood volume
    -thicker and more viscous than water- sticky
    Temperature:38C) V (100.4F)
    pH: 7.4 (7.35-7.45 normal range) slightly alkaline
    all bloods physical characteristics are closely regulated
    Venipuncture: common technique, superficial, thin wall.
    Arterial stick: less common,respiratory gases Levels (CO2/PO2)
  4. BLOOD PLASMA:
    a. Water: about 92% of plasma, solvent, suspending medium; heat transfer
    b. Plama Protein: Primarily produced in the liver. (7% plasma)
    -Albumin:(60%) small, important for osmotic pressure, ACTS as transport protein for several steroids hormones.
    -Globulins: (35%) antibodies: gamma globulins
    also trasport molecules of fat soluble vitamins and iron
    -Fibrinogen: (5%)blood clottin protein
    c. Other substances: hormones, enzymes
    -Electrolytes: Cl-, Ca++, HCO3 ( bicarbonate)
    -Nutrients: glucose, amino acids
    -Wastes: urea, ammonia
    -Gases: O2, CO2
  5. Formed Elements: (about 45% of blood volume) the cells and cell fratments
    -Vicosity: the more elements=the more vicosity
    -Hemopoiesi: Blood formation
    Hematocrit: Refers to percentage of blood that is cellular (formed) elements
    -Male: range is 40-54%/ average value 46
    -Female: range is 37-47%/ average value 42
  6. ERYTHROCYTES: RBC (99.9% of formed elements)
    -primary job: Carry Oxygen & Carbon Dioxide
    RBC ANATOMY: biconcave discs: 7-8 micron diameter
    -Enucleated:Mature cells
    RBC LIFE SPAN & NHUMBER:
    *4.5-6.3 million/ml male 4.2-5.5 million/ml female
    -RBCs live about 120 dats (4 months)
    -Can't replace/repair damage because they lack nuclei and organelles
    Removal of OLD RBCs: phagocytosis by cells in liver, spleen, bone marrow

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