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CLS FINAL EXAM LATEST 2025 ACTUAL EXAM 180 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) |ALREADY GRADED A+
All of the following are true of blood vessels EXCEPT:
a) Arteries are thick-walled, the strongest type of blood vessel
b) Veins carry deoxygenated blood
c) There are about 10,000 miles of blood vessels in an adult
d) Capillaries are the smallest blood vessels - ANSWERS--C
In cardiopulmonary circulation:
a) blood is carried from the heart to the tissues
b) blood circulates from the heart to the lungs to the tissues
c) blood circulates from the heart to the lungs where O2 is picked up
by the blood and CO2 is released
d) blood is carried from the heart to the tissues and back to the
heart, providing O2 to the tissues - ANSWERS--C
All of the following statements are true of blood EXCEPT:
a) it makes up 10%-15% of total body weight
b) adult blood volume is approximately 5 liters
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c) it is composed of formed elements suspended in a fluid called
plasma
d) about 50%-60% of blood volume is plasma - ANSWERS--A
"Thick-walled, elastic, and muscular" describes which type of blood
vessel?
a) capillaries
b) arteries
c) veins
d) venules - ANSWERS--B
Which of the following are true of hemacytometer and cover glass
EXCEPT:
a) They must meet National Institute of Standards and Technolody
(NIST) standards.
b) If a certified hemacytometer is used, any cover glass can be used.
c) They must be disinfected after use.
d) They should be gently washed and dried to avoid scratches -
ANSWERS--B
Which of the following functions is carried out by blood?
a) It delivers nutrients and CO2 to the tissues
b) It regulates body temperature
c) It delivers O2 to the lungs and tissures.
d) None of the above
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e) All of the above - ANSWERS--B
Which of the following statements is true of the hemacytometer?
a) When viewed from the top, it has two polished raised platforms
b) The depressions surrounding the platforms are called ditches
c) The depressions surrounding the platforms form the letter I
d) All of the above
E) None of the above - ANSWERS--A
Which of the following statements is true of hemacytometers?
a) the cover glass covers one side at a time
b) the cover glass regulates the depth of the fluid
c) the chamber depth in the Neubauer counting chamers is 1 mm
d) each of the nine large squares is 3x3 mm
e) none of the above - ANSWERS--B
Which of the following can be counted using the hemacytometer?
a) Peripheral blood cells
b) sperm for fertility tests
c) cells in cerebrospinal fluid
d) all of the above - ANSWERS--d
Which of the following is true of the hemacytometer?
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a) in the Unopette WBC method, the four large corner squares are
counted
b) the large center square used for the RBC count is subdivided into
20 smaller squares
c) platelets and RBCs are both counted using the whole large center
square
d) one corner square has an area of 1mm squared - ANSWERS--a
All of the following are true of RBC and WBC counts EXCEPT:
a) Many are performed when blood counts are decreased due to
chemotherapy
b) They can be performed on automated instruments
c) The majority are perfromed manually
d) Many are performed by instruments that use a laser beam -
ANSWERS--c
Which of the following is true of manual cells counts?
a) they can be performed when blood counts are decreased due to
chemotherapy
b) they are more accurate than automated counts
c) they cannot be used to monitor a patient's progress
d) the RbC and WBC cannot be performed separately - ANSWERS--a
Which of the following is true regarding the WBC count reference
ranges?
CLS FINAL EXAM LATEST 2025 ACTUAL EXAM 180 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) |ALREADY GRADED A+
All of the following are true of blood vessels EXCEPT:
a) Arteries are thick-walled, the strongest type of blood vessel
b) Veins carry deoxygenated blood
c) There are about 10,000 miles of blood vessels in an adult
d) Capillaries are the smallest blood vessels - ANSWERS--C
In cardiopulmonary circulation:
a) blood is carried from the heart to the tissues
b) blood circulates from the heart to the lungs to the tissues
c) blood circulates from the heart to the lungs where O2 is picked up
by the blood and CO2 is released
d) blood is carried from the heart to the tissues and back to the
heart, providing O2 to the tissues - ANSWERS--C
All of the following statements are true of blood EXCEPT:
a) it makes up 10%-15% of total body weight
b) adult blood volume is approximately 5 liters
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c) it is composed of formed elements suspended in a fluid called
plasma
d) about 50%-60% of blood volume is plasma - ANSWERS--A
"Thick-walled, elastic, and muscular" describes which type of blood
vessel?
a) capillaries
b) arteries
c) veins
d) venules - ANSWERS--B
Which of the following are true of hemacytometer and cover glass
EXCEPT:
a) They must meet National Institute of Standards and Technolody
(NIST) standards.
b) If a certified hemacytometer is used, any cover glass can be used.
c) They must be disinfected after use.
d) They should be gently washed and dried to avoid scratches -
ANSWERS--B
Which of the following functions is carried out by blood?
a) It delivers nutrients and CO2 to the tissues
b) It regulates body temperature
c) It delivers O2 to the lungs and tissures.
d) None of the above
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e) All of the above - ANSWERS--B
Which of the following statements is true of the hemacytometer?
a) When viewed from the top, it has two polished raised platforms
b) The depressions surrounding the platforms are called ditches
c) The depressions surrounding the platforms form the letter I
d) All of the above
E) None of the above - ANSWERS--A
Which of the following statements is true of hemacytometers?
a) the cover glass covers one side at a time
b) the cover glass regulates the depth of the fluid
c) the chamber depth in the Neubauer counting chamers is 1 mm
d) each of the nine large squares is 3x3 mm
e) none of the above - ANSWERS--B
Which of the following can be counted using the hemacytometer?
a) Peripheral blood cells
b) sperm for fertility tests
c) cells in cerebrospinal fluid
d) all of the above - ANSWERS--d
Which of the following is true of the hemacytometer?
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a) in the Unopette WBC method, the four large corner squares are
counted
b) the large center square used for the RBC count is subdivided into
20 smaller squares
c) platelets and RBCs are both counted using the whole large center
square
d) one corner square has an area of 1mm squared - ANSWERS--a
All of the following are true of RBC and WBC counts EXCEPT:
a) Many are performed when blood counts are decreased due to
chemotherapy
b) They can be performed on automated instruments
c) The majority are perfromed manually
d) Many are performed by instruments that use a laser beam -
ANSWERS--c
Which of the following is true of manual cells counts?
a) they can be performed when blood counts are decreased due to
chemotherapy
b) they are more accurate than automated counts
c) they cannot be used to monitor a patient's progress
d) the RbC and WBC cannot be performed separately - ANSWERS--a
Which of the following is true regarding the WBC count reference
ranges?
