Agglutination
clumping of blood cells in response to a reaction between an antibody and an antigen
Anemia
deficiency of red blood cells or hemoglobin
Antibodies
proteins that B cells of the immune system produce in response to a nonself antigen; it reacts with the antigen
Antigens
chemical that stimulates B lymphocytes to produce antibodies
Basophils
white blood cell containing cytoplasmic granules that stain with basic dye
Embolus
blood clot or gas bubble carried in the circulation that may obstruct a blood vessel
Eosinophils
white blood cell containing cytoplasmic granules that stain with acidic dye
Erythrocytes
red blood cell
Erythropoietin
kidney hormone that promotes red blood cell formation
Hematocrit (HCT)
the percentage by volume of red blood cells in a sample of whole blood
Hematopoietic Stem Cells
stem cell that gives rise to blood cells
Hemoglobin
oxygen-carrying pigment in red blood cells
Hemostasis
stoppage of bleeding
Leukocytes
white blood cell
Lymphocytes
type of white blood cell that provides immunity; B cell or T cell
Monocytes
type of white blood cell that is a phagocyte
Neutrophils
type of phagocytic white blood cell
Packed Cell Volume (PCV)
number of red blood cells in milliliters per 100 mL of centrifuged blood
Plasma
fluid portion of circulating blood
Plasma Proteins
protein dissolved in blood plasma
Platelets
cytoplasmic fragment formed in the bone marrow that helps blood clot
Positive Feedback
process by which changes cause
Prothrombin
plasma protein that functions in blood clotting
Red Blood Cells
disc-shaped cell, lacking a nucleus, that is packed with the oxygen-carrying molecule hemoglobin; erythrocyte
Serum
fluid portion of coagulated blood
Thrombin
blood-clotting enzyme that catalyzes formation of fibrin from fibrinogen
Thrombocytes
blood platelet
Thrombus
blood clot that remains where it forms in a blood vessel
White Blood Cells
cell that helps fight infection; leukocyte