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20 Cards in this Set
- Front
- Back
* Is a specialized CT – has intercellular substance (plasma), fibers (present during blood clotting) and cells |
Blood |
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* Largely water with inorganic salts and plasma proteins including: |
Plasma |
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3 classes of blood cells |
* red blood cells (RBC, erythrocytes)
* white blood cells (WBC, leukocytes) * platelets (thrombocytes) |
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* Function in the transport |
Erythrocytes |
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function of hemoglobin |
binds O2, loading O2 in the lungs and unloading it in other parts of the body
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Immature RBC are called |
reticulocytes |
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erythrocytes |
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* Are 5 types of cells organized into 2 groups based on the presence/absence of specific granules in the cytoplasm |
Leukocytes |
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have granules that stain specifically with certain dyes and are called granulocytes |
Neutrophils, eosinophils, and basophils |
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are considered agranulocytes |
Lymphocytes and monocytes |
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Neutrophils * Nucleus typically has 2-5 lobes joined by thin strands* Cytoplasm has granules that consist of a variety of enzymes * Highly motile and phagocytic |
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function of neutrophils |
* Function in defense against bacterial infections (phagocytize bacteria) |
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Eosinophils * Bilobed nucleus but hard to see* Large granules that stain bright red with eosin - contain major basic protein which kills parasitic worms therefore defend against parasitic infections |
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Basophils * Least commom WBC (<1%)* 12-15 um diameter * Have large basophilic granules of histamine and heparin which usually obstruct the appearance of the nucleus having two or three irregular lobes. * Curved or bilobed nucleus obscured by granules * Involved in allergic reactions |
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function of basophils |
* Involved in allergic reactions |
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Lymphocytes * Round, densely stained nucleus with a rim of pale cytoplasm* Are involved in immunological defense against invading microorganisms, antigens, and cancer cells |
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Monocytes * Large, horseshoe-shaped or kidney-shaped nucleus and pale cytoplasm* After leaving the blood, monocytes differentiate to tissue macrophages * Motile and highly phagocytic
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Platelets * Also called thrombocytes* Are irregular-shaped cell fragments that arise from a megakaryocyte in bone marrow |
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* Functions of platelets |
* 1) form a plug where a vessel is damaged |
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Clotting factors are required from: |
a) Platelets |