The Tibetan Terrier is a medium-size breed of dog originated in Tibet. Despite its name, it is not a member of the terrier group. The breed was given its name by European travellers who first encountered it, because of its resemblance to known terrier breeds.he Tibetan Terrier is a medium-size breed of dog originated in Tibet. Despite its name, it is not a member of the terrier group. The breed was given its name by European travellers who first encountered it, because of its resemblance to known terrier breeds.
The parasympathetic nervous system (PNS) controls homeostasis and the body at rest and is responsible for the body's rest and digest function. The sympathetic nervous system (SNS) controls the body's responses to a perceived threat and is responsible for the fight or flight response.he sympathetic nervous system (SNS) is one of two main divisions of the autonomic nervous system (ANS). Its general action is to mobilize the body's fight-or-flight response.
Sympathetic innervation will cause vasoconstriction of vessels to GI organs and stuff you DON'T need during a sympathetic (fight or flight) response (in addition to increasing heart rate, etc.). Parasympathetic will cause vasodilation of these vessels, so lots of blood to GI organs during rest and digest.here be vasodilation, which has nothing to do with sympathetic stimulation, to muscle groups that you would be using during the flight or fight response. Those muscles are active and require oxygen and other metabolic needs at that time.