What is a hematocrit?
Hematocrit is the percentage of leukocytes and platelets in a whole blood sample.
Hematocrit is the percentage of all formed elements in a whole blood sample.
Hematocrit is the percentage of plasma in a whole blood sample.
Hematocrit is the percentage of erythrocytes in a whole blood sample.
Which of the following is NOT regulated by the blood?
Which of the following plasma proteins is improperly matched with its function?
gamma globulins: lipid transport
albumin: osmotic pressure
alpha globulin: transport of metal ions and fat-soluble vitamins
In a centrifuged sample of blood, what should NOT be in the plasma portion of the sample?
Which plasma constituent is the main contributor to clotting?
What is the name of the protein found in erythrocytes that transports respiratory gases?
What triggers erythropoietin (EPO) production to make new red blood cells?
excess oxygen in the bloodstream
too many platelets
a high hematocrit
reduced availability of oxygen
Which part of the hemoglobin molecule binds carbon dioxide for transport?
amino acids of the globin
Choose the statement that is true concerning hemoglobin.
It is composed of four protein chains and four heme groups.
When hemoglobin is not bound to oxygen, it appears blue.
It is found in the plasma portion of blood.
It can bind a maximum of three oxygen molecules.
Which of the following does NOT stimulate erythrocyte production?
a drop in normal blood oxygen levels
Which type of leukocyte is responsible for antibody production?
Identify the leukocytes in the figure in order.
eosinophil, neutrophil, monocyte, basophil, lymphocyte
monocyte, eosinophil, lymphocyte, lymphocyte, neutrophil
neutrophil, basophil, eosinophil, monocyte, lymphocyte
neutrophil, eosinophil, basophil, lymphocyte, monocyte
From which cell do the granulocytes descend?
lymphoid stem cell
On a blood smear slide prepared using Wright's stain, you observe a large cell with a U-shaped nucleus and pale blue cytoplasm. This cell is most likely a(n) __________.
Which of the following leukocyte is NOT correctly matched with its function?
eosinophil: bacterial macrophage
lymphocytes: immune response against viral infections
What factor stimulates platelet formation?
During which event of hemostasis do clotting factors (procoagulants) assist with the transformation of blood from a liquid to a gel?
Hemostasis is important for __________.
stoppage of bleeding
white blood cell production
red blood cell production
red blood cell recycling
Which step in hemostasis involves activation of formed elements in the blood?
platelet plug formation
Which of the following represents a difference between extrinsic and intrinsic blood clotting pathways?
One is triggered by tissue damage, while the other cannot be triggered by tissue damage.
One involves calcium ions, while the other does not.
One is faster than the other.
One leads to the production of prothrombin activator and the other does not.
Which of the following would NOT lead to a bleeding disorder?
vitamin K deficiency
impaired liver function
excess calcium in the diet
A person who lacks agglutinogen A but has agglutinogen B would have blood type __________.
Choose the incompatible transfusion.
Donate type B blood to a recipient with type O blood.
Donate type A blood to a recipient with type AB blood.
Donate type B blood to a recipient with type AB blood.
Donate type O blood to a recipient with type AB blood.