Hematology Final Flashcards
Azurophilic
a term used to describe the reddish-purple staining characteristics of certain cells or cell structures; having a affinity for azureyes.
Band
Cell - an immature granulocyte with a non segmented nucleus; a “stab cell”
Basophil
A white blood cell containing basophilic-staining granules in the cytoplasm
Basophilic
Blue in color; habing affinity for the basic stain
Eosinophil
A white blood cell containing eosinophilic granules in the cytoplasm
Erythrocyte
Red blood cell; RBC
Leukocyte
White blood cell; WBC
Lymphocyte
A small basophilic-staining white blood cell having a round or oval nucleus and playing a vital role in the immune process
Megakaryocyte
A large bone marrow cell from which platelets are derived
Monocyte
A large white blood cell usually having a convoluted or horseshoe-shaped nucleus
Neutrophil
A white blood cell containing neutral-staining cytoplasmic granules and a segmented nucleus; also called Polymorphonuclear cell (PMN), poly, or seg
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
Red Blood Cell (RBC)
Blood cell that transports oxygen (O2) to tissues and carbon dioxide (CO2) to the lungs; erythrocyte
Vacuole
A membrane-bound compartment in cell cytoplasm
White Blood Cell (WBC)
blood cell that functions in immunity; leukocyte
Anisocytosis
Marked variation in the sizes of erythrocytes
Atypical Lymphocyte
Lymphocyte that occurs in response to viral infections and that is common in infectious mononucleosis; reactive lymphocyte
Differential Count
A determination of the relative numbers of each type of white blood cell when a specified number (usually 100) is counted; white blood cell differential count; leukocyte differential count
Hypochromic
Having reduced color or hemoglobin content
Macrocytic
Having a larger-than-normal cell size
Microcytic
Having a smaller-than-normal cell size
Normochromic
Having normal color
Normocytic
Having a normal cell size
Phagocytosis
The engulfing of a foreign particle or cell by another cell
Poikilocytosis
Significant variation in the shape of red blood cells
reactive Lymphocyte
See atypical lymphocyte
Mean Cell Hemoglobin (MCH)
Average red blood cell hemoglobin expressed in pictograms (pg); mean corpuscular hemoglobin
Mean Cell Hemoglobin Concentration (MCHC)
Comparison of the weight of hemoglobin in a red blood cell to the size of the red blood cell, expressed in percentage or grams per deciliter (g/dl); mean corpuscular hemoglobin concentration
Mean Cell Volume (MCV)
Average red blood cell volume in a blood sample, expressed in femtoliters (fl) or cubic microns(u3); mean corpuscular volume
Red Blood Cell Indices
Calculated values that compare the size and hemoglobin content of red blood cells in a blood sample to reference values; erythrocyte indices
Basophilia
Abnormal increase in the number of basophils in the blood; basophilic leukocytosis; also, the affinity of cellular structures for basophilic dyes
Basophilic Stippling
Remnants of RNA and other basophilic nuclear material remaining inside the red blood cell after the nucleus is lost from the cell; small purple granules in red blood cells stained with Wright’s stain
Blast Cell
An immature blood cell normally found only in the bone marrow
Codocyte
The target Cell
Crenated Cell
A shrunken red blood cell with scalloped or toothed margins
Drepanocyte
Sickle cell
Elliptocyte
Elongated, cigar-shaped red blood cell
Eosinophilia
Abnormal increase in the number of eosinophils in the blood
Folic Acid
A member of the B vitamin complex
Howell-Jolly body
Nuclear remnant remaining in red blood cells after the nucleus is lost and commonly seen in pernicious anemia and hemolytic anemias
Keratocyte
A red blood cell deformed by mechanical trauma
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
Neutrophilia
Abnormal increase in the number of neutrophils in the blood
nucleated Red Blood Cell (NRBC)
An immature red blood cell that has not yet lost its nucleus
Red Blood Cell Indices
Calculated Values that compare the size and hemoglobin content of red blood cells in a blood sample to reference values; erythrocyte indices
Schizocyte
A fragmented red blood cell; formerly called aschistocyte
Shift to the left
the appearance of an increased number of immature neutrophil forms in the peripheral blood
Sickle Cell
Crescent- or sickle-shaped red cell; drepanocyte
Sickle Cell Disease
Inherited blood disorder in which red blood cells can form a sickle shape because of the presence of hemoglobin S
Stomatocyte
Red blood cell with an elongated, mouth-shaped central area of pallor
Target Cell
Abnormal red blood cell with target appearance; codocyte
Thalassemia
A genetic disorder involving underproduction of the globin chains of hemoglobin and resulting in anemia
Vitamin B12
A vitamin essential to the proper maturation of blood cells and other cells in the body.
