Why people sometimes pee when they're scared

I thought that this was rather appropriate given what we are studying in class as well as the fact that today is Halloween. As I'm sure you all know kind of how the whole bladder thing works and that most of the time you are in control, though sometimes only with considerable effort. Turns out this all has to do with those neurological pathways we've been hearing so much about. The discomfort you feel when you have to go is due to the pontine micturition (micturition means urination) center which is located deep in your brainstem and controls when your bladder releases and if this were the only pathway in charge of your bladder you would be peeing any time your bladder got close to full without any say in the matter. Luckily for you there is an inhibitory pathway that comes from your prefrontal cortex which is why you can control your bladder consciously up to a certain point where the micturition center overwhelms the inhibitory response provided by your conscious thought. There are other ways you can lose control of your bladder though, namely when your fight or flight response kicks in. The bladder has a third system in control of its function, the limbic system. In this case a strong signal from the limbic system actually inhibits the inhibitor and the pontine micturition center decides that it doesn't want to take orders from anyone anymore and you pee, sometimes a little, sometimes a lot depending on how much control you have at the time. Scientists are still a little confused as to why this happens but it happens in many different animals but it is thought that predators tend not to like their prey soaked in their own juices.

http://io9.com/5854873/why-do-people-pee-when-theyre-frightened