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| transport oxygen bound to hemoglobin molecules; also transport small amount of carbon dioxide |
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| form a protective, movable army that helps defend the body against famage by bacteria, viruses, parasites, and tumor cells. |
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| active phagocytes; number increases rapidly during short0term or acute infections |
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| kill parasitic worms by deluging them with digestive enzymes; increase during allergy attacks; might phagocytize antigen-abtibody complexes and inactivate some inflammatory chemicals |
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| release histamine (vasodilator chemical)at sites of inflammation, contain heparin, an anticoagulant |
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| part of immune system; one group (b-lymphocytes) produces antibodies; the other group (t-lymphocytes) involved in graft rejection, fighting tumors and viruses, via direct cell attack |
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| active phagocytes that become macrophages in the tissues; long term clean-up team; increase in number during chronic infections such as tuberculosis |
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| needed for normal blodd clotting; initiate clotting cascade by clinging to torn area; help to control blood loss from broken blood vessesl |
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