Pregunta 1
Pregunta
The composition of blood is
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55% plasma, 45% formed elements
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45% plasma, 55% formed elements
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50% plasma, 50% formed elements
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none of the above
Pregunta 2
Pregunta
Reduced red blood cell numbers cause
Pregunta 3
Pregunta
Which of the following formed elements carry oxygen?
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leukocytes
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erythrocytes
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thrombocytes
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monocytes
Pregunta 4
Pregunta
Hematocrit and packed cell volume are synonymous terms
Pregunta 5
Pregunta
A reticulocyte count can indicate to a physician the rate of leukocyte formation
Pregunta 6
Pregunta
Oxygen deficiency increases RBCs numbers by increasing the secretion of erythropoietin by the kidneys
Pregunta 7
Pregunta
The life span of circulating RBCs is about 10 - 12 days
Pregunta 8
Pregunta
Heme is broken down into iron and amino acids for use in the synthesis of new RBCs
Pregunta 9
Pregunta
Plasma is a pale yellow fluid that accounts for more than half of the blood volume
Pregunta 10
Pregunta
Serum is whole blood minus the clotting elements
Pregunta 11
Pregunta
Synthesis of plasma proteins occurs in the spleen
Pregunta 12
Pregunta
The mature erythrocyte does not contain ribosomes, mitochondrias, and other organelles typical of most body cells
Pregunta 13
Pregunta
The final step in RBC formation is called erythropoiesis
Pregunta 14
Pregunta
A person with antibody A in his or her plasma would have which blood type
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type A
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type B
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type AB
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type O
Pregunta 15
Pregunta
Type AB blood is considered to be the universal recipient.
Pregunta 16
Pregunta
Blood does not normally contain the anti-Rh [blank_start]antibodies[blank_end] but they may appear in the blood of an Rh-negative mother during certain circumstances.
Pregunta 17
Pregunta
Which of the following is not a critical component of coagulation?
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thrombin
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fibrinolysis
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fibrinogen
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fibrin
Pregunta 18
Pregunta
For prothrombin to be synthesized by the liver, an adequate amount of which vitamin is required?
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Vitamin A
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Vitamin C
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Vitamin D
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Vitamin K
Pregunta 19
Pregunta
Which of the following does not hasten clotting?
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rough spot in the endothelium
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abnormally slow blood flow
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theparin
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all of the above hasten clotting
Pregunta 20
Pregunta
Which of the following statements does not describe a characteristic of leukocytes?
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they are disc-shaped cells that do not contain a nucleus
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they have the ability to fight infection
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they provide defense against certain parasites
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they provide immune defense
Pregunta 21
Pregunta
Which of the following substances is not found in serum?
Pregunta 22
Pregunta
Which of the following substances is not found in blood plasma?
Pregunta 23
Pregunta
An allergic reaction may increase the number of
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eosinophils
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neutrophils
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lymphocytes
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monocytes
Pregunta 24
Pregunta
What is a blood clot that is moving through the body called?
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embolism
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fibrosis
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heparin
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thrombosis
Pregunta 25
Pregunta
What is the primary function of hemoglobin?
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fight infection
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produce blood clots
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carry oxygen
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transport hormones
Pregunta 26
Pregunta
Are any of the following steps not involved in blood clot formation?
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A blood vessel is injured and platelet factors are formed
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Thrombin is converted into prothrombin
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Fibrinogen is converted into fibrin
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All of the above are involved in blood clot formulation
Pregunta 27
Pregunta
Classification of leukocytes that contain cytoplasmic granules: [blank_start]granulocytes[blank_end]
Most numerous leukocytes: [blank_start]neutrocytes[blank_end]
Granulocytes that release heparin and histamine: [blank_start]basophils[blank_end]
Granulocytes that protect against infections from parasitic worms and allergic reactions: [blank_start]eosinophils[blank_end]
Agranulocytes that produce antibodies: [blank_start]lymphocytes[blank_end]
Agranulocytes that can enter tissue spaces as macrophages: [blank_start]monocytes[blank_end]
Cell fragments that function in blood clotting and hemostasis: [blank_start]platelets[blank_end]
Cells from which platelets are formed: [blank_start]megakaryocytes[blank_end]
Classification of leukocytes without cytoplasmic granules: [blank_start]agranulocytes[blank_end]
Classification of formed elements that are nucleated cells lacking hemoglobin: [blank_start]leukocytes[blank_end]
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granulocytes
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neutrocytes
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basophils
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eosinophils
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lymphocytes
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monocytes
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platelets
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megakaryocytes
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agranulocytes
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leukocytes