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Destruction of the hematopoietic components of red marrow leads to a condition called .

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Which of the following is a protective function of blood?


A) maintenance of normal pH in body tissue
B) maintenance of body temperature
C) maintenance of adequate fluid volume
D) prevention of blood loss

E) A) and B)
F) A) and C)

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Which of the following is not a cause of bleeding disorders?


A) vitamin K deficiency
B) thrombocytopenia,a condition of decreased circulating platelets
C) excess secretion of platelet- derived growth factor PDGF)
D) a defect in the clotting cascade

E) C) and D)
F) B) and D)

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List one example for each of these three functions of blood: distribution,regulation,and protection.

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Distribution: deliver oxygen from lungs ...

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Sickling of red blood cells can be produced in those with sickle- cell anemia by _ .


A) travel at high altitude and vigorous exercise
B) travel at high altitude
C) vigorous exercise
D) malaria and travel at high altitude

E) A) and B)
F) None of the above

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Which of the following might trigger erythropoiesis?


A) an increased number of RBCs
B) hypoxia of EPO- producing cells
C) moving to a lower altitude
D) decreased tissue demand for oxygen

E) A) and B)
F) B) and D)

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Place the following in correct developmental sequence: 1.reticulocyte 2) proerythroblast 3) normoblast 4) late erythroblast


A) 1,3,2,4
B) 2,1,3,4
C) 1,2,3,4
D) 2,4,3,1

E) B) and D)
F) A) and B)

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