The nurse understands that atrial natriuretic peptide (ANP) helps regulate blood pressure by which of the following? (Select all that apply.)
a. It inhibits aldosterone secretion.
b. It increases renal secretion of sodium ions and water.
c. It causes vasoconstriction throughout the body.
d. It increases cardiac output.
e. It decreases blood volume.
f. It causes an increase in the baseline heart rate.
____
ANS: A, B, E
ANP increases the excretion of sodium by the kidneys by inhibiting secretion of aldosterone by the adrenal cortex. The loss of sodium is accompanied by the loss of more water in urine, which decreases blood volume and therefore blood pressure as well.
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