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14 Cards in this Set
- Front
- Back
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Antibodies |
help protect the body from pathogens |
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Antigen |
any substance that causes an immune system to produce antibodies against it
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Eosinophils |
white blood cell; blue-red nucleus; large red cytoplasm granules; numbers increase during allergies and infections by parasite worms |
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Basophils |
rarest of white blood cells; contain large histamine-containing granules that stain dark blue |
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Neutrophils |
white blood cell; multi-lobed nucleus with very fine granules; respond to acid and basic stains, turning cytoplasm to a pink stain; avid phagocytes at site of acute infection |
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Erythrocytes |
red blood cells; bring oxygen to all cells of the body; many are sacs of hemoglobin molecules; don't use any of the oxygen that they carry; look like bi-concave disks with depressed centers on both sides; large surface area to volume ratio which makes them well suited for gas exchange (O2 & CO2) |
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Leukocytes |
white blood cells; protect the body against bacteria, viruses, parasites, and tumor cells; less than red blood cells (1000:1); ONLY complete cells in the blood; can slip through walls of vessels; can perform positive chemotaxis |
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Lymphocytes |
large, dark purple nucleus occupying most of cell's volume; slightly larger than red blood cells; take shelter in lymphatic tissues, playing an important role in immune responses |
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Monocytes |
largest of white blood cells; more cytoplasm and indented nucleus; look like larger lymphocytes; once in tissues, they change into macrophages |
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Formed elements |
Blood's living blood cells |
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Hematocrit |
Red; red blood cells (erythrocytes) that separate to the bottom of a tube; 45% of total volume |
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Hemoglobin |
iron-bearing protein; transports bulk of oxygen carried in the blood |
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Plasma |
Blood's nonliving food matrix; more clear than Buffy coat; 55% of volume;90% water; liquid portion of blood; contains: nutrients, electrolytes/salts, respiratory gases, hormones, plasma proteins, various wastes |
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Platelets |
pieces or fragments of multi-nucleated cells (megakaryocytes); work as clotting agents when blood vessels are ruptured or broken; appear as dark stained cells with irregular shaped bodies scattered among other blood cells |
