The client asks what happens when beta-2 receptors are stimulated. The nurse's best response would be that this results in:
a. bronchodilation and smooth muscle relaxation.
b. bronchodilation and smooth muscle contraction.
c. bronchoconstriction and smooth muscle relaxation.
d. bronchoconstriction and smooth muscle contraction.
ANS: A
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A Correct: When these cells are stimulated, bronchodilation and smooth muscle relaxation occurs.
B Incorrect: Smooth muscle contraction does not occur.
C Incorrect: Bronchoconstriction does not occur.
D Incorrect. Bronchoconstriction and smooth muscle contraction do not occur.
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