The fight-or-flight features a ( in activity in the sympathetic division of the autonomic nervous system. the fight-or-flight response also features a ( activity in the parasympathetic division.

1. Increase

2. Decrease

Explanation:

During stress conditions, the sympathetic division of the autonomous nerve system dominates the parasympathetic division and triggers the responses required to initiate the fight or flight response.

It includes secretion of stress hormones from the adrenal medulla, dilation of the eye pupil, increased heartbeat rate and blood pressure, dilation of airways to increase breathing rate, etc.

The parasympathetic division triggers the body functions to restore and preserve the energy of the body during the resting or recovery phase.

Activation of parasympathetic division slows down the functions that support the physical activities and stress conditions.