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Cards In This Set
| Front | Back |
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Various Functions of the Blood
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1. transport
2. liquid connective tissue 3. helps stabalize pH and temperature 4. immune function |
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Blood Components- Plasma
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Plasma- 55%
1. Proteins (blood pressure, clotting, immune functioning) 2. Electrolytes 3. Hormones 4. blood gases 5. waste 6. water (92% plasma) |
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Blood Components- Formed Elements
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Formed Elements- 45%
1. Red Blood Cells 2. White Blood Cells 3. Platelets |
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Erythrocytes
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-most abundant
-lack a nucleus -transport O2 and CO2 to and from tissues -biconcave shape: increase surface area, rapid gas exchange, squeeze through vessels |
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Platelets
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-breakdown of cells in bones
-don't last long -involved in coagulation (trapped by fibrin) |
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Fibrin
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Join to form long threads- act as net to catch platelets
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Coagulation Test
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How fast fibrin and platelets form a clot
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Leukocytes
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-nucleus
-most are phagocytes -travel between endothelial cells of capillaries and tissues -two types: granular and agranular |
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Granular Leukocytes
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-neutrophil (70%)
-eosinophil (3%) -basophil (<1%) |
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Agranular Leukocytes
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-lymphocytes (20-30%)
-monocytes (2-8%) |
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Neutrophil
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-most abundant
-1st to arrive at wound -release cytotoxins -phagocytize bacteria -release cytokins to attract other WBCs -only in blood for 10 hours (bacterial death) |
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Eosinophil
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-phagocytize microbes and bacteria the body has coated
with antibodies -decrease inflammatory response |
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Basophil
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-release histamines (vasodilation)
-release heparin (prevent clotting) |
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Lymphocytes
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-smallest leukocyte
-abundant in blood -occur in lymph nodes and glands -Bcells and Tcells |
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B Cells
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Manufacture antibodies that attach to foreign bodies and help destroy them
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