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Flashcards in Hematology Deck (70):
1

Anemia

a condition in which the red blood cell count or hemoglobin level is below normal; a condition resulting in decreased oxygen-carrying capacity of the blood.

2

Anticoagulant

A chemical or substance that prevents blood coagulation.

3

Arteriole

A small branch of an artery leading to a capillary.

4

Artery

A blood vessel that carries oxygenated blood from the heart to the tissues.

5

Capillary

a minute blood vessel that connects the smallest arteries to the smallest veins and serves as an oxygen exchange vessel.

6

Cardiopulmonary circulation

The system of blood vessels that circulates blood from the heart to the lungs and back to the heart.

7

Complete blood count (CBC)

A commonly performed grouping of hematological tests.

8

Deoxyhemoglobin

The hemoglobin formed when oxyhemoglobin releases oxygen to tissues.

9

EDTA

Ethylenediaminetetraacetic acid; an anticoagulant commonly used in hematology.

10

Erythrocyte

Red blood cell; (RBC)

11

Ethylenediaminetetraacetic acid (EDTA)

An anticoagulant commonly used in hematology.

12

Granulocyte

A white blood cell containing granules in the cytoplasm; any of the neutrophilic, eosinophilia, or basophilic leukocytes.

13

Hematology

The study of blood and the blood-forming tissues.

14

Hemoglobin (Hb, Hgb)

The major functional component of red blood cells that is the oxygen-carrying molecule.

15

Hemopoiesis

the process of blood cell formation and development; hematopoiesis.

16

Hemopoietic stem cell

An undifferentiated bone marrow cell that gives rise to blood cells; also called hematopoietic stem cell.

17

Hemostasis

The process of stopping bleeding, which includes clot formation and clot dissolution.

18

leukemia

A chronic or acute disease involving unrestrained increase in the leukocytes.

19

Leukocyte

White blood cell; WBC

20

Megakaryocyte

A large bone marrow cell from which platelets are derived.

21

Oxyhemoglobin

The form of hemoglobin that binds and transports oxygen.

22

Plasma

The liquid portion of blood in which the blood cells are suspended; the straw-colored liquid remaining after blood cells are removed from anticoagulated blood.

23

Platelet

A formed element in circulating blood that plays an important role in blood coagulation; a small disk-shaped fragment of cytoplasm derived from a megakaryocyte; a thrombocyte.

24

Red blood cell (RBC)

Blood cell that transports oxygen (O2) to tissues and carbon dioxide (CO2) to the lungs; erythrocyte.

25

Stem cell

An undifferentiated cell.

26

Systemic circulation

The system of blood vessels that carries blood from the heart to the tissues and back to the heart.

27

Thrombocyte

A blood platelet.

28

Vein

A blood vessel that carries deoxygenated blood from the tissues to the heart.

29

Venule

A small vein connecting a capillary to a vein.

30

White blood cell (WBC)

Blood cell that functions in immunity; leukocyte.

31

Azidemethemoglobin

A stable compound formed when azide combines with hemoglobin.

32

Cyanmethemoglobin

A stable colored compound formed when hemoglobin is reacted with Drabkin's reagent; hemiglobincyanide (HICN)

33

Dragkin's Reagent

A hemoglobin diluting reagent that contains iron, potassium, cyanide, and sodium bicarbonate

34

Globin

The protein portion of the hemoglobin molecule

35

Heme

The iron-containing portion of the hemoglobin molecule

36

Hemiglobincyanide (HICN)

cyanmethemoglobin

37

Buffy Coat

A light colored layer of white blood cells and platelets that forms on top of the red blood cell layer when a sample of blood is centrifuged or allowed to stand undisturbed.

38

Capillary Tube

A slender glass or plastic tube used in laboratory procedures

39

Hematocrit

The volume of red blood cells packed by centrifugation in a given volume of blood and expressed as a percentage; packed cell volume (PCV)

40

Microhematocrit

A hematocrit performed in capillary tubes using a small quantity of blood; packed cell volume (PCV)

41

Microhematocrit Centrifuge

An instrument that spins capillary tubes at a high speed to rapidly separate cellular components of the blood from the liquid portion of blood

42

Packed Cell Column

The layers of blood cells that form when a tube of whole blood is centrifuged

43

Cell diluting fluid

A solution used to dilute blood for cell counts

44

Hemacytometer

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

45

Hemacytometer coverglass

A special coverglass of uniform thickness used with a hemacytometer

46

Micropipet

A pipet that measures or holds 1mL or less

47

Anemia

A condition in which the red blood cell count or blood hemoglobin level is below normal; a condition resulting in decreased oxygen-carrying capacity of the blood

48

Aperture

An Opening

49

Erythrocytosis

An excess of red blood cells in the peripheral blood; sometimes called polycythemia

50

Hemolysis

The rupture or destruction of red blood cells, resulting in the release of hemoglobin

51

Immunity

Resistance to disease or infection

52

Isotonic Solution

A solution with the same concentration of dissolved particles as the solution or cell with which it is compared

53

Leukemia

A cancer of white blood cells characterized by an abnormal increase of white blood cells and their precursors in bone marrow, tissue, and peripheral blood

54

Leukocytosis

Increase above normal in the number of leukocytes (white blood cells) in the blood

55

Leukopenia

Decrease below normal in the number of leukocytes (white blood cells) in the blood; Leukocytopenia

56

Immune Thrombocytopenic

A blood disorder characterized by purpura in skin and mucous

57

Purpura (ITP)

Membranes and low platelet count caused by the destruction of platelet by antiplatelet autoantibodies; also called idiopathic thrombocytopenic purpura

58

Petri Dish

A shallow, round covered dish made of plastic or glass primarily used to culture microorganisms

59

Thrombocytopenia

Abnormally low number of platelets in the blood

60

thrombocytosis

Abnormally high number of platelets in the blood, thrombocythemia

61

Thromboembolism

Blockage of a blood vessel by a clot (thrombus) that formed in another vessel

62

Buffer

A solution that resists a sudden, marked change in pH when acid or base (alkali) is added

63

Cytoplasm

the fluid portion of the cell surrounding the nucleus

64

eosin

A red-Orange stain or dye

65

Fixative

Preservative; a chemical that prevents deterioration of cells or tissues

66

Methylene Blue

A blue stain or dye

67

Morphology

The form and structure of cells. tussues, and organs

68

Nucleus (pl. nuclei)

The central structure of a cell that contains DNA and controls cell growth and function

69

Polychromatic

Having many colors

70

Wright's Stain

A combination of eosin and methylene blue in methanol; a polychromatic stain