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BLOOD adapted from biologycorner

BLOOD adapted from www.biologycorner.com. Functions of Blood. Transportation Defense against disease. Function: Transportation. Blood transports oxygen from the respiratory system to each cell Blood transports nutrients from the digestive system to each cell.

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BLOOD adapted from biologycorner

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  1. BLOOD adapted from www.biologycorner.com

  2. Functions of Blood • Transportation • Defense against disease

  3. . Function: Transportation • Blood transports oxygen from the respiratory system to each cell • Blood transports nutrients from the digestive system to each cell

  4. Function: Transportation Blood carries waste from cells to excretory organs • carbon dioxide goes from cells to the lungs • Other waste products go to kidneys

  5. Function: Defense against disease • White blood cells help to combat disease • http://www.youtube.com/watch?v=KxTYyNEbVU4 • http://www.youtube.com/watch?v=Z_mXDvZQ6dU

  6. Function: Defense against disease • Carries antibodies to fight disease

  7. Blood and Blood Cells Blood is a type of CONNECTIVE TISSUE It has two basic components: • CELLS  (rbc, wbc, platelets)  = 45% • Plasma (water, proteins, waste, carbon dioxide, oxygen, hormones, enzymes, etc)  = 55%

  8. Three Types of Blood Cells red blood cells (erythrocytes)white blood cells (leukocytes)platelets (thrombocytes)

  9. Erythrocytes • Contain hemoglobin • Formed in red bone marrow • Transport oxygen and carbon dioxide

  10. What do you suppose happens to your body when the erythrocyte count is too low?

  11. Anemia

  12. What do you suppose happens to your body when the erythrocyte count is too high?

  13. It is a myth that deoxygenated blood appears blue. The blood on the left is oxygenated, the right is deoxygenated blood (from a vein) Blood is never never blue. Source:  Wikipedia Commons

  14. WHITE BLOOD CELLS(Leukocytes) Formed in red bone marrow or in lymph tissue Destroy invading organisms

  15. What do you suppose happens to your body when the leukocyte count is too low?

  16. Difficult to fight infection

  17. What do you suppose is happening to your body when the leukocyte count is high?

  18. You may be fighting an infection • If the count is extremely high or low this can indicate leukemia

  19. There are FIVE different kinds of WBCs

  20. Neutrophil (nucleus has several lobes) Active phagocytes 60% of WBC Present in the pus of wounds

  21. Basophil Produces Heparin and Histamines Important in Inflammatory Reaction 1% WBC

  22. Eosinophil Mainly attack parasites 2% WBC

  23. Monocyte (larger cell, horseshoe shaped nucleus) Become macro-phages

  24. Lymphocyte(nucleus is dark and takes up almost whole cell; almost no cytoplasm seen) Defense against invaders Yield Antibodies 30% WBC

  25. Left: Lymphoctye | Right: Neutrophil

  26. Platelets (thrombocytes) Tiny fragments of bone marrow cells (not an actual cell) Help form blood clots and help repair blood vessels

  27. What do you suppose can happen to your body when thrombocyte count is too low?

  28. Clotting is impaired

  29. THROMBUS – blood clot (abnormal) EMBOLUS – when the clot moves to another place.

  30. What is DVT?        Video:  Deep Vein Thrombosis http://www.youtube.com/watch?src_vid=gGrDAGN5pC0&annotation_id=annotation_115462&feature=iv&v=uS1RGbW8UbQ What is a Pulmonary Embolism?

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