1.
Chapter 01-01
m
Hematology is the study of:
m m m m
, *a. blood cells.
m m
b. serum electrolytes. m
c. plasma hormone levels. m m
d. bacteria in the blood. m m m
General Feedback: m
Hematology is the study of blood cells*red blood cells, white blood cells, and
m m m m m m m m m m m m
platelets. Plasma and serum electrolytes and hormone levels are evaluated in various
m m m m m m m m m m m m
subdivisions of clinical chemistry, and bacteria are evaluated in clinical microbiology.
m m m m m m m m m m m
2. Chapter 01-02 m
The morphology of blood cells is important to evaluate:
m m m m m m m m
a. every time a complete blood count (CBC) is requested on a patient.
m m m m m m m m m m m
b. when an instrument-generated flag is obtained.
m m m m m
*c. when a profiling instrument result is abnormal.
m m m m m m m
d. when the white count is elevated.
m m m m m m
General Feedback: m
Every laboratory must determine*based on its instrumentation, needs of the
m m m m m m m m m
clinician and other parameter flags that alert the medical laboratory scientist to the
m m m m m m m m m m m m m
necessity for further evaluation*when it is necessary to evaluate cell morphology. Many
m m m m m m m m m m m m
instrument-generated flags, although useful, may not require review. If an automated CBC
m m m m m m m m m m m m
does not suggest the need, no reason exists to evaluate the blood film, even if the white
m m m m m m m m m m m m m m m m m
count is elevated.
m m m
3. Chapter 01-03 m
Who is ultimately responsible for determining the specimen integrity before analysis?
m m m m m m m m m m
*a. Medical laboratory professional
m m m
b. Nursing staff m
c. Phlebotomist
d. Specimen-processing personnel m
General Feedback: m
The medical laboratory scientist is responsible for ensuring the integrity of a
m m m m m m m m m m m
specimen before analysis. Only he or she can judge whether the specimen is acceptable
m m m m m m m m m m m m m m
so that valid results can be obtained. Acceptable criteria include such things as type of
m m m m m m m m m m m m m m m
,specimen for the test ordered (e.g., blood, serum, urine); appropriate additive present (if
m m m m m m m m m m m m m
needed) and amount of specimen relative to the additive; time interval since obtained;
m m m m m m m m m m m m m
and presence or absence of hemolysis, lipemia, and other similar conditions. None of the
m m m m m m m m m m m m m m
other personnel named have the education and understanding to fully make that
m m m m m m m m m m m m
judgment.
m
, 4. Chapter 01-04 Hematocrit is m m m
also called:
m m
a. white cell count. m m
b. bone marrow examination. m m
c. red blood cell (RBC) count.
m m m m
*d. packed red cell volume.
m m m m
General Feedback: m
Historically the hematocrit was determined by centrifuging an aliquot of
m m m m m m m m m
anticoagulated whole blood under specified conditions (e.g., centrifugal force, capillary
m m m m m m m m m m
tube length, and bore diameter) and then determining the ratio of the space occupied by
m m m m m m m m m m m m m m m
the packed red cells compared with that of the entire blood volume in the capillary tube,
m m m m m m m m m m m m m m m m
often expressed as a percentage. Hence, it is also called the packed mred mcell mvolume.
m m m m m m m m m m m m
5. Chapter 01-05 m
The primary function of platelets is to:
m m m m m m
a. defend the body against bacterial invasion.
m m m m m
b. carry oxygen to tissues. m m m
*c. facilitate blood clotting.
m m m
d. regulate acid-base balance.
m m m
General Feedback: m
Whenever disruption occurs to a blood vessel so that bleeding results,
m m m m m m m m m m
platelets respond initially to stop the bleeding in small vessels; they also play an integral
m m m m m m m m m m m m m m m
role in facilitating the formation of a blood clot. White cells defend against bacterial
m m m m m m m m m m m m m m
invasion; red cells (i.e., hemoglobin) carry oxygen to tissues; and a complex interaction
m m m m m m m m m m m m m
of plasma electrolytes, proteins, and carbon dioxide participates in acid-base balance.
m m m m m m m m m m m
6. Chapter 01-06 m
Which of the following can be evaluated only mthrough the microscopic examination of a
m m m m m m m m m m m m
stained blood film?
m m m
a. White blood cell (WBC) count m m m m
b. Reticulocyte count m
c. Hemoglobin concentration m
Chapter 01-01
m
Hematology is the study of:
m m m m
, *a. blood cells.
m m
b. serum electrolytes. m
c. plasma hormone levels. m m
d. bacteria in the blood. m m m
General Feedback: m
Hematology is the study of blood cells*red blood cells, white blood cells, and
m m m m m m m m m m m m
platelets. Plasma and serum electrolytes and hormone levels are evaluated in various
m m m m m m m m m m m m
subdivisions of clinical chemistry, and bacteria are evaluated in clinical microbiology.
m m m m m m m m m m m
2. Chapter 01-02 m
The morphology of blood cells is important to evaluate:
m m m m m m m m
a. every time a complete blood count (CBC) is requested on a patient.
m m m m m m m m m m m
b. when an instrument-generated flag is obtained.
m m m m m
*c. when a profiling instrument result is abnormal.
m m m m m m m
d. when the white count is elevated.
m m m m m m
General Feedback: m
Every laboratory must determine*based on its instrumentation, needs of the
m m m m m m m m m
clinician and other parameter flags that alert the medical laboratory scientist to the
m m m m m m m m m m m m m
necessity for further evaluation*when it is necessary to evaluate cell morphology. Many
m m m m m m m m m m m m
instrument-generated flags, although useful, may not require review. If an automated CBC
m m m m m m m m m m m m
does not suggest the need, no reason exists to evaluate the blood film, even if the white
m m m m m m m m m m m m m m m m m
count is elevated.
m m m
3. Chapter 01-03 m
Who is ultimately responsible for determining the specimen integrity before analysis?
m m m m m m m m m m
*a. Medical laboratory professional
m m m
b. Nursing staff m
c. Phlebotomist
d. Specimen-processing personnel m
General Feedback: m
The medical laboratory scientist is responsible for ensuring the integrity of a
m m m m m m m m m m m
specimen before analysis. Only he or she can judge whether the specimen is acceptable
m m m m m m m m m m m m m m
so that valid results can be obtained. Acceptable criteria include such things as type of
m m m m m m m m m m m m m m m
,specimen for the test ordered (e.g., blood, serum, urine); appropriate additive present (if
m m m m m m m m m m m m m
needed) and amount of specimen relative to the additive; time interval since obtained;
m m m m m m m m m m m m m
and presence or absence of hemolysis, lipemia, and other similar conditions. None of the
m m m m m m m m m m m m m m
other personnel named have the education and understanding to fully make that
m m m m m m m m m m m m
judgment.
m
, 4. Chapter 01-04 Hematocrit is m m m
also called:
m m
a. white cell count. m m
b. bone marrow examination. m m
c. red blood cell (RBC) count.
m m m m
*d. packed red cell volume.
m m m m
General Feedback: m
Historically the hematocrit was determined by centrifuging an aliquot of
m m m m m m m m m
anticoagulated whole blood under specified conditions (e.g., centrifugal force, capillary
m m m m m m m m m m
tube length, and bore diameter) and then determining the ratio of the space occupied by
m m m m m m m m m m m m m m m
the packed red cells compared with that of the entire blood volume in the capillary tube,
m m m m m m m m m m m m m m m m
often expressed as a percentage. Hence, it is also called the packed mred mcell mvolume.
m m m m m m m m m m m m
5. Chapter 01-05 m
The primary function of platelets is to:
m m m m m m
a. defend the body against bacterial invasion.
m m m m m
b. carry oxygen to tissues. m m m
*c. facilitate blood clotting.
m m m
d. regulate acid-base balance.
m m m
General Feedback: m
Whenever disruption occurs to a blood vessel so that bleeding results,
m m m m m m m m m m
platelets respond initially to stop the bleeding in small vessels; they also play an integral
m m m m m m m m m m m m m m m
role in facilitating the formation of a blood clot. White cells defend against bacterial
m m m m m m m m m m m m m m
invasion; red cells (i.e., hemoglobin) carry oxygen to tissues; and a complex interaction
m m m m m m m m m m m m m
of plasma electrolytes, proteins, and carbon dioxide participates in acid-base balance.
m m m m m m m m m m m
6. Chapter 01-06 m
Which of the following can be evaluated only mthrough the microscopic examination of a
m m m m m m m m m m m m
stained blood film?
m m m
a. White blood cell (WBC) count m m m m
b. Reticulocyte count m
c. Hemoglobin concentration m
