Hematology Exam 1 (chapter 1) Questions with
Correct Answers
In which group of individuals would you expect to find the highest
reference intervals for hemoglobin, hematocrit, and erythrocyte count?
A. newborns
B. males older than 12 years of age
C. females older than 17 years of age
D. children between 1 and 5 years of age Correct Answer-A. newborns
Which cells are important in transporting oxygen and carbon dioxide
between the lungs and body tissues?
A. platelets
B. leukocytes
C. thrombocytes
D. erythrocytes Correct Answer-D. erythrocytes (RBCs have
hemoglobin hormone which function to transport O2 and CO2)
Forty-five percent of the volume of blood is normally composed of:
A. erythrocytes
B. leukocytes
C. platelets
D. plasma Correct Answer-A. erythrocytes (RBCs make up 45% of
blood composition)
, Alterations in the concentration of blood cells generally are the result of:
A. laboratory error
B. amount of exercise before blood draw
C. a disease process
D. variations in analytical equipment Correct Answer-C. a disease
process
Leukocytes are necessary for:
A. hemostasis
B. defense against foreign pathogens
C. oxygen transport
D. excretions of cellular metabolism Correct Answer-B. defense against
foreign pathogens
Laboratories can use which type of testing to help direct the physician's
selection of appropriate testing after screening tests are performed?
A. reflexive based on results of screening tests
B. manual repeat of abnormal results
C. second test by a different instrument
D. standing orders for all inpatients Correct Answer-A. reflexive based
on results of screening tests
Screening tests used to evaluate the hemostasis system include:
A. PT and APTT
Correct Answers
In which group of individuals would you expect to find the highest
reference intervals for hemoglobin, hematocrit, and erythrocyte count?
A. newborns
B. males older than 12 years of age
C. females older than 17 years of age
D. children between 1 and 5 years of age Correct Answer-A. newborns
Which cells are important in transporting oxygen and carbon dioxide
between the lungs and body tissues?
A. platelets
B. leukocytes
C. thrombocytes
D. erythrocytes Correct Answer-D. erythrocytes (RBCs have
hemoglobin hormone which function to transport O2 and CO2)
Forty-five percent of the volume of blood is normally composed of:
A. erythrocytes
B. leukocytes
C. platelets
D. plasma Correct Answer-A. erythrocytes (RBCs make up 45% of
blood composition)
, Alterations in the concentration of blood cells generally are the result of:
A. laboratory error
B. amount of exercise before blood draw
C. a disease process
D. variations in analytical equipment Correct Answer-C. a disease
process
Leukocytes are necessary for:
A. hemostasis
B. defense against foreign pathogens
C. oxygen transport
D. excretions of cellular metabolism Correct Answer-B. defense against
foreign pathogens
Laboratories can use which type of testing to help direct the physician's
selection of appropriate testing after screening tests are performed?
A. reflexive based on results of screening tests
B. manual repeat of abnormal results
C. second test by a different instrument
D. standing orders for all inpatients Correct Answer-A. reflexive based
on results of screening tests
Screening tests used to evaluate the hemostasis system include:
A. PT and APTT
