Final answer:
The nurse should associate the 'fight-or-flight' response with the neurotransmitter Norepinephrine.
Step-by-step explanation:
The nurse should associate the 'fight-or-flight' response with the neurotransmitter Norepinephrine. During the fight-or-flight response, the sympathetic nervous system is activated, leading to an increase in heart rate, blood pressure, and energy levels. Norepinephrine is released from the adrenal medulla and binds to adrenergic receptors, promoting the physiological changes associated with the fight-or-flight response.