Which of the following is activated during the fight or flight reaction?

Question

BlackTom AI · Accepted Answer

This question asks which neural system is activated during the fight or flight response, a physiological reaction to perceived threat.
Option 1: 'sympathetic nervous system' — This is the key component of the autonomic nervous system that gets activated in stress, increasing heart rate, dilating pupils, and mobilizing energy—classic features of fight or flight. This option correctly identifies the system involved.
Option 2: 'parasympathetic nervous system' — The parasympathetic division generally promotes rest, digestion, and conserving energy; it counteracts the fight or flight response rather than triggering it, so this choice is incorrect in this context.
Option 3: 'central nervous system' — The CNS (brain and spinal cord) processes information and coordinates responses, but the immediate autonomic changes of fight or flight are mediated by the autonomic branches (sympathetic and parasympathetic), not by the CNS as the direct trigger, making this an incomplete or misleading choice for this question.
Option 4: 'somatic nervous system' — The somatic nervous system controls voluntary muscle movement and conscious motor control; it is not the primary driver of the autonomic arousal seen in fight or flight, so this option does not describe the activated system during this reaction.
In summary, the fight or flight response is best explained by the activation of the sympathetic nervous system, with the other options describing systems that either oppose this state, provide higher-level processing, or govern voluntary movement rather than autonomic arousal.

Which of the following is activated during the fight or flight reaction?单项选择题

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