Welcome to Anxiety Q&A, where you can ask questions and receive answers. Please Click to go to Anxiety Boss
KalmPro: Doctor recommended anxiety supplement.
Find out Your Anxiety Levels.

How does the fight or flight response affect heart rate?

1 Answer

0 votes
Best answer

The fight or flight response increases the heart rate via its effects on the sympathetic nervous system. When you sense fear or danger, the amygdala in you brain is triggered. The activated amygdala then triggers another part of the brain called the locus coeruleus, which then activates the sympathetic nervous system. The activated sympathetic nervous system then activates the heart to beat faster and contract more forcefully. See the following diagram for how the fight or flight response increases heart rate:

answered Feb 13, 2016 by drcarlo (295,840 points)