#1
What is the normal range of hematocrit in adult males?
#2
What does hematocrit measure?
Red blood cell count
White blood cell count
Platelet count
Volume of red blood cells in blood
#3
What is the primary function of red blood cells in the body?
Carrying oxygen to tissues
Producing antibodies
Clotting blood
Digesting food
#4
During a blood transfusion, what component of the blood is primarily replaced?
Plasma
White blood cells
Platelets
Red blood cells
#5
What is the term for an abnormally low platelet count?
Thrombocytopenia
Thrombocythemia
Leukopenia
Polycythemia
#6
Which condition is characterized by a low hematocrit level?
Polycythemia
Leukopenia
Anemia
Thrombocytosis
#7
What procedure involves measuring hematocrit by spinning a blood sample in a centrifuge?
Hemodialysis
Hemoglobin electrophoresis
Venipuncture
Hematocrit centrifugation
#8
Which of the following factors can falsely elevate hematocrit levels?
Hypervolemia
Iron deficiency anemia
Pregnancy
Leukocytosis
#9
What does a hematocrit value of 30% indicate?
Normal hematocrit
Mild anemia
Polycythemia
Leukocytosis
#10
Which medical condition is characterized by an abnormally high hematocrit level?
Hemophilia
Sickle cell anemia
Polycythemia vera
Hemochromatosis
#11
What effect does dehydration have on hematocrit levels?
Increases hematocrit
Decreases hematocrit
No effect on hematocrit
Raises platelet count
#12
What is the formula to calculate hematocrit?
Hematocrit (%) = Red blood cell count (millions/μL) / Total blood volume (mL)
Hematocrit (%) = Hemoglobin (g/dL) / Red blood cell count (millions/μL)
Hematocrit (%) = Red blood cell count (millions/μL) / Hemoglobin (g/dL)
Hematocrit (%) = Total blood volume (mL) / Red blood cell count (millions/μL)
#13
What is the term for a decrease in hematocrit levels below the normal range?
Hypovolemia
Thrombocytopenia
Hemorrhage
Hematocritosis