What do the following statements have in common: overhydration, vitamin B12 deficiency, bleeding, and decreased erythrocyte production?
A) They are all causes of anemia.
B) They are all causes of polycythemia.
C) They are all associated with normal hematocrit levels.
D) They are not associated with hematocrit levels in the human body.
Answer: A
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List and briefly describe the four general properties of adaptive immunity
________ is the stage of development in the life of an erythrocyte during which the nucleus is ejected.
Fill in the blank(s) with the appropriate word(s).
The intrinsic pathway of coagulation is activated by the
A) release of tissue factor by a damaged endothelium. B) conversion of prothrombin to thrombin. C) activation of proenzyme exposed to collagen. D) sticking of platelets to damaged tissue. E) release of heparin from the liver.
Which of the following regimens should lead to the loss of one pound of fat in one
week? A) eating 250 calories less a day and not exercising. B) burning 1,000 calories a day swimming, or eating 1,000 fewer calories a day. C) burning 500 calories a day running or eating 500 fewer calories a day. D) burning 1,000 calories on each of three days with exercise and eating an extra 200 calories a day.