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Describe platelets -thrombocytes -smallest elements in blood -fragments of cells -initiate blood clotting -hemostasis
Describe red blood cells -transport O2/CO2 -most numerous circulating cell -develop hgb -shape like biconcave disks -live about 120 days
Describe the spleen -acts as a filter -destroys old RBC's -stores healthy blood cells
Describe the thymus -responsible for cellular immunity -transforms lymphocytes into T cells
Describe the tonsils -masses of lymphatic tissue -protect upper respiratory structures
Describe white blood cells -protect the body from pathogens -remove debris -aid in healing process -diapedesis -initiate inflammation and immune response -phagocytic -some have granules
List autoimmune diseases -AIDS -allergies -MG -RA -thrombocytopenia -vasculitis -SLE
What is the function of histamines -initiate the inflammation process
What are the two ducts of the lymph system -right lymphatic duct -thoracic duct
What are the four types of T cells -cytotoxic -helper -suppressor -memory
What are the functions of the lymph system -maintain fluid balance -transport lipids -filter and remove unwanted infectious material
What is an allergy -acquired abnormal immune response
What is hematology -study of blood cells, blood-clotting mechanisms
What is heparin -acts to prevent blood from clotting
Where do blood cells develop from -stem cells
edema abnormal accumulation of fluids in the intercellular spaces of the body
hemosiderosis abnormal increase of iron in the blood
leukocytes abnormal increase in white cells
lymphadenopathy any disease of the lymph nodes
antiserum blood serum that contains antibodies
megakaryocyte cell with a large nucleus; fragments become platelets
pernicious anemia chronic, progressive anemia due to lack of sufficient vitamin b12
phagocytosis condition of ingesting cells
leukopenia decrease in white blood cells
thrombolysis Destruction of a clot
Created by: AshleyMcM