| Aplastic Anemia | Decreased in RBC's and/or hemoglobin due to no production |
| Hemolytic Anemia | Decrease in RBC's and/or hemoglobin due to destruction (destroying its own) |
| Hemorrhagic Anemia | Decrease in RBC's and/or hemoglobin due to loss (bleeding out) |
| Agranulocytes | WBC's lacking granules in their cytoplasm; lymphocytes and monocytes |
| Albumin | Plasma protein that maintains blood volume |
| Anemia | Decrease in RBC's and/or hemoglobin |
| Antibody (Ab) | Proteins produced by WBC's in response to antigens |
| Antigens (Ag) | Foreign substance (protein) that stimulates the production of antibodies |
| Basophils | Granulocytic WBC seen in anaphylaxis |
| Bilirubin | Metabolite of hemoglobin breakdown; conjugated in the liver |
| Coagulation | blood clotting |
| Eosinophil | Granulocytic WBC seen with allergies and parasites |
| Erthrocyte | Red Blood Cell (RBC) |
| Erythropoietin (EPO) | Hormone secreted by the kidneys to stimulate RBC production |
| Fibrin | Protein threads that form the basis of a clot |
| Fibrinogen | Plasma protein that is converted to fibrin in the clotting process |
| Globulins | Plasma proteins such as alpha, beta, and gamma globulins |
| Granulocytes | WBC's containing granules in their cytoplasm; neutrophils, eosinophils, and basophils |
| Heme | Iron-containing portion of hemoglobin |
| Hemoglobin (Hb) | Oxygen-carrying pigment (protein) of RBC's |
| Homeostasis | State of equilibrium of the body's internal environment |
| Leukocyte | White Blood Cell (WBC) |
| Lymphocyte | Agranulocyte that produces antibodies |
| Macrophages | Monocytes that migrate from the blood to the tissue |
| Megakaryocyte | Precursor to a platelet formed in the bone marrow |
| Neutrophil | Granulocytic WBC that is the body's primary bacterial phagocyte |
| Plasma | Fluid portion of anticoagulated or circulating blood |
| Prothrombin | Plasma protein that is converted to thrombin in the clotting process |
| Serum | Fluid portion of coagulated blood |
| Stem Cell | Cell that has the potential to become any cell type |
| Thrombin | An enzyme that results from the activation of prothrombin |
| Thrombocyte | Platelet; clotting cell |
| Anticoagulant | Agent that prevents coagulation of blood |
| Autoimmune Hemolytic Anemia (AHA) | Idiopathic disease in which the body destroys its own good RBC's |
| Disseminated Intravascular Coagulation (DIC) | Formation of clots throughout microcirculation which leads to hemorrhage due to consumption of clotting factors |
| Dyscrasia | Any abnormal or pathological condition of blood |
| Exsanguination | Extensive blood loss due to internal and external hemorrhage |
| Hematocrit | The percentage of red blood cells in a volume of blood |
| Hemophilia | Bleeding disorder in which the animal is lacking one or more clotting proteins |
| Hemorrhage | Escape of blood through ruptured blood vessels |
| Icterus | Yellowish coloration of the plasma |
| Leukemia | Increase in the number of cancerous WBC's |
| Lipemia | Fat in the blood |
| Phlebotomy | Venipuncture; act of drawing blood |
| Transfusion | Transfer of blood and blood components from one animal to another |
| Von Willebrand's disease | Congenital bleeding disorder in which the animal is lacking Willebrand's clotting factors |
