ASCP MLS

MLS Hematology Exam What is the first type of cell produced by the developing embryo? - ANS Erythrocyte What percentage of tissue located in the bone marrow cavities of adults is fat? - ANS 50% Which of the following is not characteristic of pluripotent hematopoietic stem cells? - ANS Express the stem marker CD13 In an adult, what are the two best areas for obtaining active bone marrow by aspiration? - ANS Posterior iliac crest, sternum What is the normal ratio of myeloid to erythroid prec...

ASCP MLS Hematology EXAM PREP QUESTIONS AND ANSWERS nsufficient 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 - ANS A. Insufficient centrifugation does not pack down the red blood cells; therefore, the Hct, which is the volume of packed cells, will increase. Variation in red cell size observed on the peripheral smear is described as: A. Anisocytosis B. Hypo...

MLS Review - Hematology REAL EXAM QUESTIONS AND ANSWERS A+ GRADED 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, dependent on the patient - ANS a. insufficient centrifugation does not pack down the red blood cells; therefore, the Hct, which is the volume of packed cells, will increase variation in red cell size observed on the peripheral smear is described as: a. anisoc...

MLS BOC - Hematology PRACTICE QUESTIONS WITH CORRECT ANSWERS this is an expression of inactive X chromosome seen in Neutrophils of females only - ANS Barr body Also known as Azurophilic granules or Non-specific granules, disappear with maturation and reappears in toxic granulation - ANS Primary granules which Neutrophilic granules has in its contents cytotoxic compounds, Myeloperoxidase (MPO) - ANS primary azurophilic non-specific granules Also known as Specific granules and gives the neutrophi...

What is the first type of cell produced by the developing embryo? Correct Answer: Erythrocyte What percentage of tissue located in the bone marrow cavities of adults is fat? Correct Answer: 50% Which of the following is not characteristic of pluripotent hematopoietic stem cells? Correct Answer: Express the stem marker CD13 In an adult, what are the two best areas for obtaining active bone marrow by aspiration? Correct Answer: Posterior iliac crest, sternum What is the normal rati...

Which of the following is impermeable to water? Correct Answer: Ascending Loop of Henle Normal renal blood flow is approximately The approximate renal threshold for glucose is: Correct Answer: 160-180 mg/dL Which of the following would be considered a CLIA waived test? Correct Answer: Visual inspection of a urine dipstick Which of the following is not a function of the kidney? Correct Answer: Removal of excess protein from the blood The structure of the nephron that functions...

Fibrinogen Substrate Stable Liver Non-Vitamin K dependent Consumed during clotting Correct Answer: Factor I Prothrombin Serine protease Stable/Variable Liver Vitamin K dependent Consumed during clotting Correct Answer: Factor II Proaccelerin Cofactor Labile Liver Non-Vitamin K dependent Consumed during clotting Correct Answer: Factor V Proconvertin Serine Protease Stable Liver Vitamin K dependent Not consumed during clotting Correct Answer: Factor VII Anti-hem...

Prostacyclin Correct Answer: produced by the walls of endothelial cells and prevents formation of the platelet plug involved in primary hemostasis by preventing platelet activation and aggregation as well as inducing vasodialation. Epinephrine Correct Answer: agonist used in platelet aggregation studies ristocetin Correct Answer: causes platelets to bind to vWF via their GPIb receptor. A test is abnormal in a vWF deficiency since the platelets cannot bind, which causes lack of adhesion/...

What is produced from megakaryocytes? Correct Answer: platelets Life span of platelets Correct Answer: 9-12 days Distribution of platelets Correct Answer: 30% spleen 70% peripheral blood What factors are vitamin k dependent? Correct Answer: 1927 (10, 9, 2, 7, Protein C, and protein S) Which factors are consumed in clotting? Correct Answer: I II V VIII XIII What factors in the intrinsic pathway? Correct Answer: XII XI IX VIII What factors are in the extrinsic pathway? Corr...

What feature is most often found with patients with a splenectomy on a Wright's stained blood smear? Correct Answer: Howell-Jolly bodies Patients with antibody to the following antigen are immune to Hepatitis B: Correct Answer: Surface antigen (HbSAg) Which two of the following tests are helpful for documenting previous Streptococcal throat and skin infections: Correct Answer: ASO titer and Anti-DNase B In mass spectrometry, the "appearance potential" is defined as the: Correct An...