MLT ASCP Practice Questions with correct answers.

MLT ASCP Practice Questions with correct answers. Standard precautions apply to all of the following except: a. Blood b. Cerebrospinal fluid c. Semen d. Concentrated acids - correct answers.d. Concentrated acids The most important practice in preventing the spread of disease is: a. Wearing masks during patient contact b. Proper hand washing c. Wearing disposable laboratory coats d. Identifying specimens from known or suspected HIV- and HBV-infected patients with a red label - correct answers.b. Proper hand washing The appropriate dilution of bleach to use in laboratory disinfection is: a. 1:2 b. 1:5 c. 1:10 d. 1:100 - correct answers.d. 1:10 How frequently should fire alarms and sprinkler systems be tested? a. Weekly b. Monthly c. Quarterly d. Annually - correct answers.c. Quarterly Where should alcohol and other flammable chemicals be stored? a. In an approved safety can or storage cabinet away from heat sources b. Under a hood and arranged alphabetically for ease of identification in an emergency c. In a refrigerator at 2 C to 8 C to reduce volatilization d. On a low shelf in an area protected from light - correct answers.a. In an approved safety can or storage cabinet away from heat sources The most frequent cause of needle punctures is: a. Patient movement during venipuncture b. Improper disposal of phlebotomy equipment c. Inattention during removal of needle after venipuncture d. Failure to attach needle firmly to syringe or tube holder - correct answers.b. Improper disposal of phlebotomy equipment What class fire extinguisher would be appropriate to use on a fire in a chemical cabinet? a. Class A b. Class B c. Class C d. Class D - correct answers.b. Class B Select the needle most commonly used in standard venipuncture in an adult: a. One inch, 18 gauge b. One inch, 21 gauge c. One-half inch, 23 gauge d. One-half inch, 25 gauge - correct answers.b. One inch, 21 gauge The process of formation and development of blood cells is termed: a. Hematopoiesis b. Hematemesis c. Hematocytometry d. Hematorrhea - correct answers.a. Hematopoiesis During the second trimester of fetal development, the primary site of blood cell production is: a. Bone marrow b. Spleen c. Lymph nodes d. Liver - correct answers.d. Liver Which of the following organs is responsible for the maturation of T lymphocytes and regulation of their expression of CD4 and CD8? a. Spleen b. Liver c. Thymus d. Bone marrow - correct answers.c. Thymus The best source of active bone marrow from a 20-year-old would be: a. Iliac crest b. Femur c. Distal radius d. Tibia - correct answers.a. Iliac crest Physiologic programmed cell death is termed: a. Angiogenesis b. Apoptosis c. Aneurysm d. Apohematics - correct answers.b. Apoptosis Which organ is the site of sequestration of platelets? a. Liver b. Thymus c. Spleen d. Bone marrow - correct answers.c. Spleen Which one of the following cells is a product of the CLP? a. Megakaryocyte b. T lymphocyte c. Erythrocyte d. Granulocyte - correct answers.b. T lymphocyte What growth factor is produced in the kidneys and is used to treat anemia associated with kidney disease? a. EPO b. TPO c. G-CSF d. KIT ligand - correct answers.a. EPO Which one of the following cytokines is required very early in the differentiation of a hematopoietic stem cell? a. IL-2 b. IL-8 c. EPO d. FLT3 ligand - correct answers.d. FLT3 ligand Hematopoietic stem cells produce all lineages of blood cells in sufficient quantities over the lifetime of an individual because they: a. Are unipotent b. Have the ability of self-renewal by asymmetric division c. Are present in large numbers in the bone marrow niches d. Have a low mitotic potential in response to growth factors - correct answers.b. Have the ability of self-renewal by asymmetric division Which of the following is an erythrocyte progenitor? a. Pronormoblast b. Reticulocyte c. CFU-E d. Orthochromic normoblast - correct answers.c. CFU-E Which of the following is the most mature normoblast? a. Orthochromic normoblast