antibodies causing antigens to clump or stick together
anemia
deficient number of red blood cells or deficient hemoglobin
antibody
substance produced by the body that destroys or inactivates a specific substance that has entered the body
antigen
substance that, when introduced into the body, causes formation of antibodies against it
aplastic anemia
blood disorder characterized by a low red blood cell count; caused by destruction of myeloid tissue in the bone marrow
basophil
white blood cell that stains readily with basic dyes
buffy coat
thin layer of white blood cells and platelets located between red blood cells and plasma in a centrifuged sample of blood
carbaminohemoglobin
the compound formed by the union of carbon dioxide with hemoglobin
embolism
obstruction of a blood vessel by forgein matter carried in the bloodstream
embolus
a blood clot or other substance that is moving in the blood and may block a blood vessel
eosinophil
white blood cell that is readily stained by eosin
erythroblastosis fetalis
a disease that may develop when an Rh-negative mother has anti-Rh antibodies and gives birth to an Rh-positive baby and the antibodies react with the Rh-negative cells of the body
erythrocyte
red blood cells
fibrin
insoluble protein in clotted blood
fibrogen
soluble blood protein that is converted to insoluble fibrin during clotting
hematocrit
volume percent of blood cells in whole blood
hemoglobin
iron-containing protein in red blood cells
hemorrhagic anemia
condition charaterized by low oxygen carrying capacity of blood; caused by decreased red blood cell lifespan and/or increased rate of RBC destruction
heparin
substance obtained from the liver; inhibits blood clotting
leukemia
blood cancer characterized by an increase in white blood cells
leukocyte
white blood cells
leukosytosis
abnormally high white blood cell numbers in the blood
leukopenia
abnormally low white blood cell number in the blood
lymphocyte
type of white blood cell
macrophage
phagocytic cells in the immune system
monocyte
a phagocyte
neutrophil
white blood cell that stains readily with neutral dyes
oxyhemoglobin
hemoglobin combined with oxygen
pernicious anemia
deficiency of red blood cells resulting from a lack of vitamin B12
phagocyte
white blood cell that engulfs microbes and digests them
plasma
the liquid part of the blood
plasma protein
any of several proteins normally found in the plasma; includes albumins, globulins, and fibrinogen
polycythemia
an excessive number of red blood cells
prothrombin
a protein present in normal blood that is required fo blood clotting
prothrombin activator
a protein formed by clotting factors from damaged tissue cells and platelets; it converts prothrombin into thrombin, a step essential to forming a blood clot
serum
blood plasma minus its clotting factors, still contains antibodies
sickle cell anemia
when only one defective gene is inherited and only a small amount of hemoglobun that is less soluble than usual is produced
thrombin
protein important in blood clotting
thrombocyte
plays a role in blood clotting; also called platelet
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