Antonio's car stalls in the middle of a railroad crossing just as a train is rapidly approaching.His emotional arousal is likely to be accompanied by
A) a decreased blood sugar level.
B) a decreased respiration rate.
C) contraction of the arteries.
D) dilation of his pupils.

Question

Quizplus · Accepted Answer

When faced with a potentially life-threatening situation, the body undergoes a fight-flight response which involves the activation of the sympathetic nervous system. This results in the dilation of pupils in order to improve visual acuity and the ability to detect potential threats. Choice A is incorrect because the fight-flight response typically leads to an increase in blood sugar levels. Choice B is incorrect because the fight-flight response typically leads to an increase in respiration rate. Choice C is incorrect because the fight-flight response typically leads to the dilation of arteries in order to increase blood flow to the muscles.

Antonio's Car Stalls in the Middle of a Railroad Crossing