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When Stress/Fright occur, they activate Sympathetic Fibers and do what?
Release of Norepinephrine to bind B1 receptors
The release of Norepinephrine cause what?
Pacemaker to fire more rapidly and lead to higher heart-beat.
What nervous system would sometimes oppose the Higher Heart-beat lead by Sympathetic?
Parasympathetic is mediated by what? And what's the consequence of the mediatation?
AcH; Pottasium Channels open
What will be released when Norepinephrine is being released during Sympathetic Activation?
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