Sympathetic and parasympathetic divisions of the peripheral nervous system?

Question

What are the primary functions of the sympathetic and parasympathetic divisions of the peripheral nervous system? Describe a situation or experience that you have had in which activation of the sympathetic and parasympathetic divisions occur and the role that the sympathetic and parasympathetic systems played in that situation or experience. Be sure to identify the processes involved

Answer 1

Do a search on "Fight or Flight"

Answer 2

As one of my pharmacology professors used to teach -

Sympathetic - "fight or flight"

imagine if a vicious wild animal came at you.  Your pupils would dilate, your heart and respiratory rates would increase, your peripheral blood vessels will constrict, your central larger blood vessels will dilate, and your gut will shut down.  

Parasympathetic - conservation

Increased secretion, increase gastric motility, sweating, slowed heart rate, constricted pupils.

The third and tenth cranials nerves are parasympathetic.

Answer 3

Put simply, Sympathetic - Fight or Flight, Parasympathetic - Rest or Repose...