hey monet:
this is just my understanding:
botox works via inhibiting the release of Ach. Thus, you use it for muscle relaxation (wrinkle removal). And the locations that Ach is used as a neurotransmiter is as follows:
Parasymp: both at pre-ganglionic and post-ganglionic sites
Symp: only at pre-ganglionic sites. And the only post-ganglionic structure using Ach is the sweat glands. 😀
Ach is involved in Adrenal Medulla, leading to Epi, NE release.
Finally, Ach is involved in innerating the skeletal muscles.
I hope this helps...
optiplex