Mls hematology latest - Study guides, Class notes & Summaries

Hematopoiesis Production and development of blood cells normally occurring in the bone marrow Yolk sac -the beginning of hematopoiesis -begins as early as the eighteenth day after fertilization Aorta-gonad-mesonephros (AGM) -the beginning of intraembryonic hematopoiesis -beings at about four weeks of gestation Where is the location of hematopoiesis during the fetal development at the third month? liver Bone Marrow -the blood-forming tissue located between the t...

A. A false increase in hematocrit (Hct) value A Insufficient centrifugation does not pack down the red blood cells; therefore, the Hct, which is the volume of packed cells, will increase. Insufficient centrifugation will result in: A. A false increase in hematocrit (Hct) value B. A false decrease in Hct value C. No effect on Hct value D. All of these options, depending on the patient A. Anisocytosis A A mature erythrocyte is approximately 7-8 μm in diameter. Variation in nor...

Which is true regarding the red blood cell? The body increases the amount of RBC progenitors at all times to increase the response time when anemia occurs. Active hematopoiesis in an adult would most likely take place in the: Hip What are the two reasons that the erythrocyte loses its nucleus?(multiple) To gain membrane deformability; To allow for better oxygen transport into the tissues What is the major function of the erythrocyte? Oxygen transport Which descibe...

this is an expression of inactive X chromosome seen in Neutrophils of females only Barr body Also known as Azurophilic granules or Non-specific granules, disappear with maturation and reappears in toxic granulation Primary granules which Neutrophilic granules has in its contents cytotoxic compounds, Myeloperoxidase (MPO) primary azurophilic non-specific granules Also known as Specific granules and gives the neutrophilic cytoplasm a characteristic pink/neutral color Secon...

Normal Hemoglobin range for an adult male 13.5-18 g/dL Normal Hemoglobin range for an adult female 12-15 g/dL Normal hemoglobin range for newborn 16.5-21.5 g/dL Normal hemoglobin range for young children 10-15 g/dL Normal hematocrit range for adult males 40%-54% Normal hematocrit range for adult female 35%-49% Normal hematocrit range for newborn 48 - 68 % Normal ESR for adult males 0-15 mm/hr Normal ESR for adult females 0-20 mm/hr...

What is hematology? The study of blood cell production, destruction, number and disease What is the RBC lifespan? 120 days What is the WBC lifespan? 10-15 days What is the most common anticoagulant used in Hematology? EDTA Is plasma with or without an anticoagulant? With an anticoagulate, no clot is formed Is serum with or without an anticoagulant? Without an anticoagulant, a clot forms Terminology for a RBC erythrocyte Terminology for a WB...

The thymus is primarily responsible for the development of: T Lymphocytes Which of the following is the correct order of maturation for hematopoiesis from earlier to later stages? Pluripotential, Progenitor, Precursor Which of these acts on the pluripotent hematopoietic stem cells to initiate proliferation and differentiation into progenitor cells? KIT Ligand During the Mesoblastic period, the primary organ of hematopoiesis is: Yolk Sac A patient who has too many ...

Variation in red cell size observed on the peripheral smear is described as: A. Anisocytosis B. Hypochromia C. Poikilocytosis D. Pleocytosis A. Anisocytosis A mature erythrocyte is approximately 7-8um in diameter. Variation in normal size is denoted by the term anisocytosis. Hypochromia is a term that indicates increased central pallor in erythrocytes, and poikilocytosis denotes variation in red cell shape. Which of the following is the preferable site for bone marrow aspiration a...

hemorrage large loss of blood thrombosis formation of a blood clot serum Liquid portion express from unanticoagulated blood Plasma Liquid part of blood Describe the basic process of primary hemostasis ... Describe the basic process of secondary hemostasis make the fibrin clot Describe the basic process of fibrinolysis Break down of fibrin clot List the three layers of the vascular wall Tunica intima, Tunica media, and Tunica externa ...

Protoporphyrin ring is the backbone of what? Heme Molecule Protoporphyrin combines with what to make Heme? Fe++ or Ferrous Iron Hemoglobin and Ferric Iron = Methemoglobin Hemoglobin + CO2 = Carbaminohemoglobin 1 g Hbg contains how much O2 1.34 mL O2 1g Hgb contains how much iron? 3.47 mg Fe Drabkin's reagent is used in what method of hemoglobin measurement? Cyanmethemoglobin This reagent contains -NaHCO3 -KCN -K3FeCN -Water Drabkin's...