The major importance of regulating ECF osmolarity is
a. to help maintain blood pressure
b. to prevent the urine from becoming too concentrated
c. to prevent fluid shifts between cells and the ECF, which could produce profound symptoms as the cells swell or shrink
d. to prevent spontaneous depolarization of nerve and muscle cell membranes because of shifts in Na+ balance
e. to prevent an acid-base imbalance if the hydrogen ions were to become too concentrated or too dilute in the body fluids
C
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