hematology part 1

Anticoagulant

Anticoagulant

a chemical that prevents blood coagulation

Diurnal

having a daily cycle

Lipemic

having a cloudy appearance due to excess lipid content

Deoxyhemoglobin

the hemoglobin formed when oxyhemoglobin releases oxygen to tissues

EDTA

ethylendiaminetetra acetic acid; an anticoagulant commonly used in hematology

Granulocyte

a leukocyte containing granules in the cytoplasm; any of the neutrophilic, eosinophilic, or basophilic leukocytes

Hemoglobin (Hb, Hgb)

the major functional component of red blood cells that serves as the oxygen

Hemopoiesis

the process of blood cell formation and development; hematopoiesis

Hemostasis

the process of stopping bleeding

Megakaryocyte

a large bone marrow cell from which platelets are derived

Oxyhemoglobin

the form of hemoglobin that binds and transports oxygen

Platelet

a formed element in circulating blood that plays an important role in blood coagulation; a small disk

Stem cell

a primitive, undifferentiated bone marrow cell

Thrombocyte

a blood platelet

Capillary action

the action by which a fluid enters a tube because of the attraction between the fluid and the tube

Heparin

an anticoagulant used in certain laboratory procedures

Cephalic vein

a superficial vein of the arm commonly used for venipuncture

Gauge

a measure of the diameter of a needle

Hypodermic needle

a hollow needle used for injections or for obtaining fluid specimens

Lumen

the open space within a tubular organ or tissue

Median cubital vein

a superficial vein located in the bund of the elbow (cubital fossa) that connects the cephalic vein to the basilic vein

Palpate

to examine by touch

Phlebotomy

venipuncture; entry of a vein with a needle

Syringe

a hollow, tube like container with a plunger, used for injecting or withdrawing fluids

Hemostasis

the process of stopping bleeding

Stem cell

a primitive, undifferentiated bone marrow cell

Leukocyte

blood cell that functions in immunity; white blood cell (WBC)

Aperture

an opening.

Cell diluting fluid

a solution used to dilute blood for cell counts.

Hemacytometer

a heavy glass slide made to precise specifications and used to count cells microscopically; a counting chamber.

Hemacytometer coverglass

a special cover glass of uniform thickness used with a hemacytometer.

Immunity

resistance to disease or infection.

Isotonic solution

a solution that has the same concentration of dissolved particles as the solution or cell with which it is compared.

Cyanthemoglobin

a stable colored compound formed when hemoglobin is reacted with Drabkins reagent; hemigloincyanide.

Drabkin’s Reagent

a hemoglobin

Globin

the protein portion of the hemoglobin molecule.

heme

the iron portion of the hemoglobin.

hemiglobincyanide

cyanmethemoglobin.

Hemoglobin

the major functional component of RBCs that serves as the oxygen

Buffer

a substance that lenses change in the Ph of a solution when acid or base is added