Chapter 18: Blood Vocab 2 Flashcards
neutrophils
granulocytes that stain with a neutral dye and are the most numerous of the leukocytes; especially active against bacteria
eosinophils
granulocytes that stain with eosin; they release antihistamines and are especially active against parasitic worms
basophils
granulocytes that stain with a basic (alkaline) stain and store histamine and heparin
monocytes
agranular leukocytes of the myeloid stem cell line that circulate in the bloodstream
lymphocytes
agranular leukocytes of the lymphoid stem cell line, many of which function in specific immunity
leukopenia
below-normal production of leukocytes
leukocytosis
excessive leukocyte proliferation
leukemia
cancer involving leukocytes
thrombocytopenia
condition in which there are too few platelets, resulting in abnormal bleeding (hemophilia)
thrombocytosis
condition in which there are too many platelets resulting in abnormal clotting (thrombosis)
hemostasis
physiological process by which bleeding ceases
clotting factors
group of 12 identified substances active in coagulation
embolus
thrombus that has broken free from the blood vessel wall and entered the circulation
thrombus
aggregation of fibrin, platelets, and erythrocytes in an intact artery or vein
hemophilia
genetic disorder characterized by inadequate synthesis of clotting factors