Blood
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Blood

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Blood Blood Presentation Transcript

  • Blood
    6th Grade Science
  • I. Components
    Plasma
    Liquid part of blood
    90% water
    10% waste & nutrients
    Take waste away from cells
    Deliver nutrients
    Yellow color – Protein
    i. Water balance
    ii. Fight germs
    iii. Blood clotting
  • B. Blood Cells
    Red Blood Cells
    i. One key protein – Hemoglobin
    a. Bind to O2 in lungs by letting go of CO2
    b. Bind CO2 in tissues and let go of O2
    ii. Lifespan: 120 days
    iii. No nucleus
  • 2. White Blood Cells
    Fight off germs
    Numbers: 1 for every 1,000 blood cells
    Lifespan: months to decades
    Nucleus
  • C. Platelets
    Cell fragments
    Function: Block blood flow
    i. Activate chemical fibrin in plasma to create scab
  • II. Blood Typing
    ABO Modifications on surface of Red Blood Cells
    A (added to surface)
    B (added to surface)
    O (Nothing added to surface)
  • B. Rh factor
    Additional modification of red blood cells
    i. If you have it Rh positive
    ii. If you don’t have it Rh negative
  • C. Blood Transfusions
    1. Your body attacks whatever your cells don’t make
    i. A-
    a. Then you will attack cells with B or Rh
    b. You can get A- or O-
    ii. AB+
    a. Then you see everything as normal
    b. You can get A-, A+, B-, B+, AB-, AB+, O-,O+
    c. Called universal acceptor (any blood works for you)
    iii. O-
    a. Then anything on cells you react to
    b. You can only get O-
    c. You can give to anyone “Universal Donor”
  • III. Lymphatic System
    System of tubes to return liquid to blood
    1. Called lymph fluid
    B. Lymph Nodes
    1. Filter fluid checking for germs
    2. Can be closed if infected