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Which of the following serves as an enzyme in the blood coagulation mechanism?


A) thrombin
B) prothrombin
C) fibrinogen
D) fibrin
E) serotonin

F) A) and D)
G) A) and C)

Correct Answer

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What is the function of the hormone thrombopoietin?


A) It stimulates platelet formation.
B) It inhibits platelet formation.
C) It stimulates thrombus formation.
D) It inhibits megakaryocyte formation.

E) C) and D)
F) All of the above

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Lymphocytes function as phagocytes against bacteria.

A) True
B) False

Correct Answer

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This structural feature of erythrocytes (RBCs) provides increased surface area for oxygen diffusion.


A) microvilli
B) biconcave disc shape
C) overlapping folds in the plasma membrane

D) All of the above
E) A) and C)

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A clot that breaks loose and travels in the blood is called a(n)__________.

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Persons with type AB blood are sometimes called universal donors.

A) True
B) False

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Blood is a type of epithelial tissue.

A) True
B) False

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Oxygen,carbon dioxide and sodium are the 3 main gases dissolved in the blood.

A) True
B) False

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Platelets function to repair breaks in blood vessels and clot the blood.

A) True
B) False

Correct Answer

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Neutrophils,eosinophils and basophils are called granulocytes.

A) True
B) False

Correct Answer

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Platelets are best defined as


A) giant,multinucleated cells.
B) cytoplasmic fragments of cells.
C) immature leukocytes.
D) lymphoid cells.
E) stem cells.

F) All of the above
G) B) and E)

Correct Answer

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