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Blood

Blood. 1. What are the main functions of blood?. A. Transports O 2 , CO 2 , nutrients, wastes, & hormones B. Regulates body temperature and pH C. Protection by: 1. s topping fluid loss by clotting 2. protects against disease. 2. What is blood made of?. Plasma water

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Blood

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  1. Blood

  2. 1. What are the main functions of blood? A. Transports O2, CO2, nutrients, wastes, & hormones B. Regulates body temperature and pH C. Protectionby: 1. stopping fluid loss by clotting 2. protects against disease

  3. 2.What is blood made of? • Plasma • water • Plasma proteins • 1% carbs, lipids, vitamins, hormones, & electrolytes • Cells

  4. 3. Name the 3 types of blood cells & their function. 1. Red Blood Cells • transport gases 2. White Blood Cells • protect against disease 3. Platelets • clot blood

  5. 4. Where are RBCs made? What is their structure? • Made in Red Bone Marrow by stem cells • No nucleus or organelles • bi-concave shape • so they are lighter & travel faster • also allows them to hold more O2

  6. 5. How do RBCs carry oxygen? • RBCs contain hemoglobin - an oxygen carrying protein • Hemoglobin contains iron which has a positive charge that attracts oxygen which has a negative charge (Fe2+ & O2-) • gives blood its red color

  7. Did YOU know?? • An individual blood cell takes about 60 seconds to make a complete circuit of the body!

  8. 6. Where are WBCs made? What is their general structure & function? • Made from stem cells in red bone marrow and in the spleen • Larger than RBCs and contains a nucleus • Short life-span (a few hours to a few days) due to their ‘rough job’ duties • Destroys foreign and dead cells as well as makes antibodies WBCs are outnumbered by RBCs 700 to 1!

  9. 7. What are platelets? What do they do? • Cell fragments that help clot blood • Super small with no nucleus • Lifespan = 5-9 days

  10. Did YOU know??? • Feeling hot, Hot, HOT!! • Blood temperature is approximately 100oF! (about 1.5 degrees hotter than normal body temperature).

  11. 8. What is Blood clotting? What are the steps? • STOP the bleeding! (aka blood clotting) • Steps to healing a broken blood vessel: • 1. Blood vessel spasm: to lessen blood loss • 2. Platelet Aggregation: platelets stick to broken portion of the vessel and to each other. • 3. Platelet Plug: All of the platelets form a plug that can stop blood loss http://health.howstuffworks.com/adam-200077.htm

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