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Mixed Quiz
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1An increase in blood pH would:
A)favor the formation HCO3- in the tubule cells
B)favor the formation of HCO3- in the blood
C)favor the formation of NaH2PO4
D)be fatal to the organism


2According to the above illustration, some important buffering systems in the body are:
A)phosphate and protein
B)bicarbonate and phosphate
C)protein and bicarbonate
D)protein, phosphate and bicarbonate


3As Na+ is shifted into the blood from the filtrate, K+ is filtered out of the blood. This occurs in order to maintain
A)pH
B)electrolyte balance
C)both a and b
D)neither a nor b

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4A constantly replenished source of bicarbonate ion is:
A)carbonic acid normally present in the tubules
B)carbonic acid produced from metabolic carbon dioxide and water
C)sodium carbonate in the filtrate
D)bicarbonate ion in the blood


5Enhanced Na+ resorbtion as a result of aldosterone release will lead to:
A)enhanced secretion of K+ from the blood to the tubule cells
B)excessive thirst
C)highly dilute urine
D)a large shift in urine pH





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