Blood

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Blood

  1. 1. Blood<br />6th Grade Science<br />
  2. 2. I. Components<br />Plasma<br />Liquid part of blood<br />90% water<br />10% waste & nutrients<br />Take waste away from cells<br />Deliver nutrients<br />Yellow color – Protein<br />i. Water balance<br />ii. Fight germs<br />iii. Blood clotting<br />
  3. 3. B. Blood Cells<br />Red Blood Cells<br />i. One key protein – Hemoglobin<br /> a. Bind to O2 in lungs by letting go of CO2<br /> b. Bind CO2 in tissues and let go of O2<br /> ii. Lifespan: 120 days<br /> iii. No nucleus<br />
  4. 4. 2. White Blood Cells<br />Fight off germs<br />Numbers: 1 for every 1,000 blood cells<br />Lifespan: months to decades<br />Nucleus<br />
  5. 5. C. Platelets<br />Cell fragments<br />Function: Block blood flow<br />i. Activate chemical fibrin in plasma to create scab <br />
  6. 6. II. Blood Typing<br />ABO Modifications on surface of Red Blood Cells<br />A (added to surface)<br />B (added to surface)<br />O (Nothing added to surface)<br />
  7. 7. B. Rh factor<br />Additional modification of red blood cells<br />i. If you have it Rh positive<br />ii. If you don’t have it Rh negative<br />
  8. 8. C. Blood Transfusions<br />1. Your body attacks whatever your cells don’t make<br />i. A-<br /> a. Then you will attack cells with B or Rh<br /> b. You can get A- or O-<br />ii. AB+<br /> a. Then you see everything as normal<br /> b. You can get A-, A+, B-, B+, AB-, AB+, O-,O+<br /> c. Called universal acceptor (any blood works for you)<br />iii. O-<br /> a. Then anything on cells you react to<br /> b. You can only get O-<br /> c. You can give to anyone “Universal Donor”<br />
  9. 9. III. Lymphatic System<br />System of tubes to return liquid to blood<br />1. Called lymph fluid<br />B. Lymph Nodes<br />1. Filter fluid checking for germs<br />2. Can be closed if infected<br />

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