05 Jan a. is found in white

Question 1

2.50 points out of 2.50

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On the diagram of RBC production, what does “A” represent?

Select one:

a. increased blood oxygen

b. decreased blood oxygen

c. erythropoietin

d. kidney

e. red bone marrow

Question 2

2.50 points out of 2.50

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Why would a person have anti-Rh antibodies present in their blood?

Select one:

a. They are Rh-positive and were exposed to Rh-negative blood.

b. An Rh-negative woman is carrying an Rh-positive fetus.

c. An Rh-positive woman is carrying an Rh-negative fetus.

d. A person can not have anti-Rh antibodies in their blood.

Question 3

2.50 points out of 2.50

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Agglutination of red blood cells means

Select one:

a. they rupture.

b. they form a clot.

c. they clump together.

d. they lose their nucleus.

e. they bump into each other.

Question 4

2.50 points out of 2.50

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The total blood volume is ____ plasma.

Select one:

a. 50%

b. 90%

c. 75%

d. 55%

Question 5

2.50 points out of 2.50

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In the platelet release reaction,

Select one:

a. factor XII is activated.

b. ADP and thromboxanes stimulate other platelets to become activated.

c. activated platelets are connected by fibrinogen.

d. prostaglandin production is inhibited.

e. platelets convert to fibrin.

Question 6

2.50 points out of 2.50

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Hemocytoblast stem cells

Select one:

a. are specialized cells.

b. are found in yellow bone marrow.

c. form branches of trees.

d. are abundant in the plasma.

e. give rise to all formed elements in the blood.

Question 7

2.50 points out of 2.50

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Which of the following functions is associated with the blood?

Select one:

a. delivery of oxygen to tissue cells

b. transport of digestive enzymes to the small intestine

c. maintenance of DNA content of egg cells

d. transport of neurotransmitters across synapses

e. electrical stimulation of the heart

Question 8

2.50 points out of 2.50

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What ion is necessary for the coagulation process?

Select one:

a. sodium

b. potassium

c. magnesium

d. calcium

Question 9

2.50 points out of 2.50

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These cells are produced by hematopoiesis. What does “A” represent?

Select one:

a. granulocytes

b. platelets

c. lymphocyte

d. neutrophil

e. red blood cell

Question 10

2.50 points out of 2.50

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What type of gene expression occurs when a person has type AB blood?

Select one:

a. homozygous dominant

b. homozygous recessive

c. incomplete dominance

d. codominance

Question 11

2.50 points out of 2.50

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Which of the following formed elements do not have chromosomes?

Select one:

a. erythrocytes

b. reticulocytes

c. erythroblasts

d. erythrocytes and reticulocytes

e. erythrocytes, reticulocytes and erythroblasts

Question 12

2.50 points out of 2.50

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What may be affected if the enzyme carbonic anhydrase was not made in the body?

Select one:

a. conversion of hemoglobin to oxyhemoglobin

b. conversion of carbon dioxide to bicarbonate ion

c. transport of oxygen by hemoglobin

d. hemolysis of red blood cells

Question 13

2.50 points out of 2.50

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Which of the following is an agranulocyte?

Select one:

a. eosinophil

b. basophil

c. neutrophil

d. monocyte

e. erythrocyte

Question 14

2.50 points out of 2.50

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On the diagram of RBC production, what does “C” represent?

Select one:

a. increased blood oxygen

b. decreased blood oxygen

c. increased erythropoietin

d. kidney

e. red bone marrow

Question 15

2.50 points out of 2.50

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Platelets

Select one:

a. are also known as thrombocytes.

b. are actually fragments of cells.

c. play a role in preventing blood loss.

d. can become sticky when exposed to connective tissue

e. All of these choices are .

Question 16

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Plasma

Select one:

a. is one of the formed elements.

b. is the liquid matrix of the blood.

c. transports waste products but not nutrients.

d. accounts for less than half of the blood volume.

e. is serum plus formed elements.

Question 17

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On the diagram of RBC production, what does “E” represent?

Select one:

a. increased blood oxygen

b. decreased blood oxygen

c. erythropoietin

d. kidney

e. red bone marrow

Question 18

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An increased amount of heparin in the blood might

a. speed up the clotting process.

b. slow down the clotting process.

c. stop the clotting process.

d. enhance the clotting process.

e. have no effect on the clotting process.

Question 19

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Which of the following cell types is an immature red blood cell?

a. erythrocyte

b. reticulocyte

c. thrombocyte

d. monocyte

e. leukocyte

Question 20

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Bilirubin

a. is found in white blood cells.

b. may be reused in erythropoiesis.

c. is formed from the globin groups of hemoglobin.

d. is made from bile.

e. may build up in the circulation and cause jaundice.