Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The effects of the sympathetic nervous system are mediated via release of neurotransmitters and neuropeptides from sympathetic neurons. NPY and tyrosinhydroxylase are likely to modulate NPY and/or norepinephrine (NE) release whereby NE seems to moderate the flight and fight response during stress whereas NPY contributes to dampen down the effects of NE during stress response.
