Patho Chap 25
Patho Chap 25
Study online at https://quizlet.com/_874o4j
1. 1. A 5th grade elementary student D
asks the school nurse how much Feedback:
blood is in an entire body. The nurse The total volume of blood in the average adult is
should respond that the average about 5 to 6 L, and it circulates throughout the body
grown-up adult has within the confines of the circulatory system.
A) 2 to 4 cups of blood in his or her
body.
B) 3 pints of blood in total.
C) 3 to 4 quarts of blood in his or her
body.
D) 5 to 6 L of blood throughout his or
her body.
2. 2. A hospital laboratory technician is A
performing routine blood analysis as Feedback:
part of an inpatient's assessment and The body layer of cells in a centrifuged blood sam-
is examining the sample in a test tube ple consists of erythrocytes and should constitute
following processing in a centrifuge around 42% to 47% of the total blood volume. The
and the addition of an anticoagulant. middle cell layer of leukocytes should appear whitish
Which of the following observations gray, and the thrombocytes above that layer are fre-
would the technician most likely in- quently not discernable. The plasma layer should
terpret as an anomaly? account for around 55% of the total blood volume.
A) The bottom layer of blood in the
tube accounts for around one third of
the total volume.
B) The middle layer of cells appears
white to gray in color.
C) The top layer of cells is too thin to
visualize without microscopy.
D) The yellowish fluid on the top
of the sample appears to constitute
around one half of the total volume.
Page 1 2026
, Patho Chap 25
Patho Chap 25
Study online at https://quizlet.com/_874o4j
3. 3. During science class, a student A
asks, "What's the difference between Feedback:
plasma and serum in the blood?" The The major difference between plasma and serum
nurse responds that the primary dif- is the presence of fibrinogen in the plasma from an
ference between plasma and serum anticoagulated centrifuged whole-blood specimen.
is that plasma contains When blood is removed from the body for testing, it
A) fibrinogen. clots within 30 to 60 minutes. The clot contains the
B) heparin. blood's cellular components enmeshed in an insol-
C) white blood cells. uble fibrin network (formed by the polymerization of
D) hydrogen ions. soluble plasma protein fibrinogen). The remaining
fluid portion is the yellow liquid serum. This serum
no longer contains fibrinogen because the fibrino-
gen originally present in uncoagulated blood was
used up in the formation of the blood clot. Heparin,
WBC, and hydrogen ions are incorrect.
4. 4. A student makes the statement to B
a colleague, "Blood plasma is essen- Feedback:
tially just a carrier for the formed el- Plasma proteins are integral to transport. They are
ements like red blood cells and white not noted to contribute to the inflammatory re-
blood cells." What would be the most sponse, hematopoiesis, protein synthesis, or liver
accurate response to this statement? function.
A) "That's not really true. Plasma is
crucial in the immune and inflamma-
tory responses."
B) "Actually, plasma plays a significant
role in nutrient and waste transport."
C) "Not really. Plasma also contributes
to the processes of protein synthesis
and hematopoiesis."
D) "Actually, plasma is integral to the
Page 2 2026
Patho Chap 25
Study online at https://quizlet.com/_874o4j
1. 1. A 5th grade elementary student D
asks the school nurse how much Feedback:
blood is in an entire body. The nurse The total volume of blood in the average adult is
should respond that the average about 5 to 6 L, and it circulates throughout the body
grown-up adult has within the confines of the circulatory system.
A) 2 to 4 cups of blood in his or her
body.
B) 3 pints of blood in total.
C) 3 to 4 quarts of blood in his or her
body.
D) 5 to 6 L of blood throughout his or
her body.
2. 2. A hospital laboratory technician is A
performing routine blood analysis as Feedback:
part of an inpatient's assessment and The body layer of cells in a centrifuged blood sam-
is examining the sample in a test tube ple consists of erythrocytes and should constitute
following processing in a centrifuge around 42% to 47% of the total blood volume. The
and the addition of an anticoagulant. middle cell layer of leukocytes should appear whitish
Which of the following observations gray, and the thrombocytes above that layer are fre-
would the technician most likely in- quently not discernable. The plasma layer should
terpret as an anomaly? account for around 55% of the total blood volume.
A) The bottom layer of blood in the
tube accounts for around one third of
the total volume.
B) The middle layer of cells appears
white to gray in color.
C) The top layer of cells is too thin to
visualize without microscopy.
D) The yellowish fluid on the top
of the sample appears to constitute
around one half of the total volume.
Page 1 2026
, Patho Chap 25
Patho Chap 25
Study online at https://quizlet.com/_874o4j
3. 3. During science class, a student A
asks, "What's the difference between Feedback:
plasma and serum in the blood?" The The major difference between plasma and serum
nurse responds that the primary dif- is the presence of fibrinogen in the plasma from an
ference between plasma and serum anticoagulated centrifuged whole-blood specimen.
is that plasma contains When blood is removed from the body for testing, it
A) fibrinogen. clots within 30 to 60 minutes. The clot contains the
B) heparin. blood's cellular components enmeshed in an insol-
C) white blood cells. uble fibrin network (formed by the polymerization of
D) hydrogen ions. soluble plasma protein fibrinogen). The remaining
fluid portion is the yellow liquid serum. This serum
no longer contains fibrinogen because the fibrino-
gen originally present in uncoagulated blood was
used up in the formation of the blood clot. Heparin,
WBC, and hydrogen ions are incorrect.
4. 4. A student makes the statement to B
a colleague, "Blood plasma is essen- Feedback:
tially just a carrier for the formed el- Plasma proteins are integral to transport. They are
ements like red blood cells and white not noted to contribute to the inflammatory re-
blood cells." What would be the most sponse, hematopoiesis, protein synthesis, or liver
accurate response to this statement? function.
A) "That's not really true. Plasma is
crucial in the immune and inflamma-
tory responses."
B) "Actually, plasma plays a significant
role in nutrient and waste transport."
C) "Not really. Plasma also contributes
to the processes of protein synthesis
and hematopoiesis."
D) "Actually, plasma is integral to the
Page 2 2026
