All of the following factors could cause decreased hematocrit except
A. kidney disease with a decline in erythropoietin production.
B. anemia.
C. smoking or emphysema.
D. a hemorrhage.
E. All of these could cause decreased hematocrit.
Answer: C
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A. erythrocytes. B. plasma. C. leukocytes. D. platelets. E. leukocytes and platelets.
Implantation usually begins at about the end of the first ________ of development
A. day B. week C. month D. trimester
The _____ phase of the action potential in _____ cells is due to a _____
a. rising, autorhythmic cells, rapid Ca2+ influx b. rising, contractile cells, rapid Na+ influx c. plateau, contractile cells, slow Ca2+ influx d. All of the above correctly complete the sentence. e. Only b and c correctly complete the sentence.
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A) first B) second C) fourth D) ninth E) twelfth