Phlebotomy worksheet 4
The life span of a red blood cell is approximately: A. 1 year B. 30 days C. 9 to 12 days D. 120 days
120 days
The formed elements make up about ______ percent of whole blood volume. A. 30 B. 45 C. 55 D. 60
45
Five components that are found in a CBC with diff. are: A. WBC, RBC, platelet, bilirubin, LDH B. WBC, RBC, hemoglobin, glucose, hematocrit C. WBC, RBC, cholesterol, triglyceride, hematocrit D. WBC, RBC, hemoglobin, hematocrit, differential
WBC, RBC, hemoglobin, hematocrit, differential
Which blood vessels generally carry blood that is high in oxygen? A. arteries B. veins C. venules D. all are equally oxygenated
arteries
The function of the erythrocyte is to: A. carry oxygen B. carry nutrients C. fight infection D. stop bleeding
carry oxygen
The function of the leukocyte is to: A. carry oxygen B. carry nutrients C. fight infection D. stop bleeding
fight infection
The tricuspid and bicuspid valves are associated with the: A. heart B. liver C. spleen D. stomach
heart
What is the substance in erythrocytes that carry oxygen? A. albumin B. glucose C. hemoglobin D. sodium chloride
hemoglobin
The buffy coat consists of: A. erythrocytes and leukocytes B. leukocytes only C. leukocytes and thrombocytes D. leukocytes and plasma
leukocytes and thrombocytes
What happens when a coronary artery becomes occluded? A. electrical impulses are carried to the purkinje fibers B. immediate death C. myocardial infarction D. none of the above
myocardial infarction
When a patient has had a mastectomy, venipuncture should be avoided on the affected side because the A. patient may be embarrassed B. patient is more susceptible to infection C. venipuncture is more painful D. it is acceptable to collect blood from either srm
patient maybe more susceptible to infection
The fluid portion of anticoagulated whole blood that contains fibrinogen is called the: A. buffy coat B. serum C. plasma D. fluid portion
plasma
What is the difference between plasma and serum? A. serum comes from anti-coagulated blood; plasma does not B. plasma contains fibrinogen; serum does not C. serum contains fibrinogen; plasma does not D. plasma is found only in the body
plasma contains fibrinogen; serum does not
The formed elements of blood inside a tube drawn with an anticoagulant are: A. plasma, buffy coat, and erythrocytes B. buffy coat and clot C. serum and a buffy coat D. serum and a clot
plasma, buffy coat, and erythrocytes
What cells contribute most to blood clotting? A. lymphocytes B. platelets C. red blood cells D. white blood cells
platelets
Which does NOT carry oxygenated blood? A. aorta B. pulmonary artery C. pulmonary vein D. all of the above carry oxygenated blood
pulmonary artery
Blood flows from the right atrium to the right ventricle. From this point, it is pumped through the: A. aorta to the rest of the body B. pulmonary artery to the lungs C. pulmonary artery to the rest of the body D. pulmonary vein to the lungs
pulmonary artery to the lungs
The ventricles of the heart are principally respoile for: A. lubrication B. portal circulation C. pumping blood D. receiving blood
pumping blood
Where does the electrical impulse start in the heart? A. sinoatrial node B. atrialventricular node C. bundle of his D. purkinje fibers
sinoatrial node
Which is referred to as the pacemaker of the heart? A. bundle of his B. purkinje fibers C. AV node D. sinoatrial node
sinoatrial node
Unoxygenated blood from the head and neck region returns to the heart via the: A. pulmonary artery B. aorta C. inferior vena cava D. superior vena cava
superior vena cava
What is the function of the coronary arteries? A. they carry oxygenated blood back to the heart B. they cause the blood to be oxygenated in the lungs C. they supply oxygenated blood to the heart muscle D. none of the above
they supply oxygenated blood to the heart muscle
Which of the following is NOT a leukocyte? A. neutrophil B. lymphocyte C. thrombocyte D. monocyte
thrombocyte
Why does the left ventricle of the heart have such a thick muscular wall? A. to pump blood to the lungs B. to expel sir from it C. to pump blood to all other parts of the body D. both A and B
to pump blood to all other parts of the body
The main function of the circulatory system is to provide: A. absorption B. elimination C. protection D. transportation
transportation
