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Life Science 2.2 : Blood


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Life Science 2.2 : Blood

  1. 1. Life Science 2.2<br />Blood<br />
  2. 2. Identify the four main components of blood.<br />Describe three functions of blood.<br />Explain how blood pressure is measured.<br />Explainwhat the ABO blood types are and why they are important.<br />Objectives:<br />
  3. 3. What Is Blood?<br />Blood <br />Connective tissue that carries gases, nutrients, and wastes through the body.<br />Plasma <br />Fluid part of blood. <br />Mixture of water, minerals, nutrients, sugars, proteins, and other substances.<br />Red Blood Cells<br />Most blood cells are red blood cells (RBCs). <br />Take oxygen to every cell in your body.<br />
  4. 4. Platelets <br />Pieces of larger cells found in bone marrow. <br />Help blood clot.<br />White Blood Cells (WBCs)<br />Keep you healthy by destroying pathogens (bacteria and viruses).<br />Clean wounds.<br />Keep you healthy by destroying body cells that have died or been damaged<br />
  5. 5. Body Temperature Regulation<br />Your blood does more than supply your cells with oxygen and nutrients. <br />It also helps regulate your body temperature.<br />The force exerted by blood on the inside walls of arteries<br />Blood Pressure<br />
  6. 6. Blood Types<br />Every person has one of four blood types: <br />A, B, AB, or O. <br />Your blood type refers to the type of antigens you have on the surface of your RBCs.<br />
  7. 7. Blood Types and Transfusions<br />A transfusion is the injection of blood or blood components into a person to replace blood that has been lost. <br />Blood type is an important consideration of a blood transfusion.<br />