18.43 It's been a long night and day of Oscar coverage, and we'll be rounding this live blog off soon. But, before we do, I think it's important to point out that someone on Twitter has made a fish-related Oscars joke. (Oscar fish, incidentally, are a type of cichlid.
For other uses, see Fight or Flight. The fight-or-flight response (also called the fight, flight, freeze, or fawn response [in PTSD ], hyperarousal, or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It was first described by Walter Bradford Cannon.
Fight or Flight. To produce the fight-or-flight response, the hypothalamus activates two systems: the sympathetic nervous system and the adrenal-cortical system. The sympathetic nervous system uses nerve pathways to initiate reactions in the body, and the adrenal-cortical system uses the bloodstream.