A young woman who lives alone comes home at night to find a man in her apartment. What body responses would be expected for the young woman?
A) Increased blood pressure (BP), increased heart rate, and pupil dilation
B) Decrease sweating, decreased BP, and increased heart rate
C) Pupil constriction, increased respiratory rate, and decreased heart rate
D) Increased sweating, decreased respiratory rate, and increased BP
A
Feedback:
When stimulated by a stressful or fearful situation, the sympathetic nervous system (SNS) prepares the body to flee or to turn and fight. Cardiovascular activity increases as do blood pressure, heart rate, and blood flow to skeletal muscles. Respiratory rate increases, pupils dilate, and sweating increases. Decrease in sweating, BP, heart rate, respiratory rate, and pupil constriction indicate stimulation of the parasympathetic nervous system, which would not be stimulated by fear.
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