Question | Answer |
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 |