Sympathetic activation does NOT produce which of the following?
A. Increased blood flow to active muscles
B. Increased blood glucose levels
C. Increased digestive activity
D. Dilation of bronchioles
E. Increased heart rate
ANS: C
Rationale: The role of the sympathetic nervous system is often illustrated by describing the physiologic responses to fear. When an individual feels threatened, the sympathetic nervous system prepares for vigorous muscle activity; that is, it prepares for fight or flight. Vasoconstriction in the skin and gut increases blood flow to active muscles. Blood glucose levels increase, bronchi and coronary vessels dilate, and blood pressure and heart rate increase. Simultaneously, sympathetic firing reduces activity in the digestive system.
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