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.
In addition, the blood vessels that direct blood to the large muscles and the heart dilate, thereby increasing the amount of blood pumped to these parts of the body and elevating blood pressure. This is also known as the fight or flight response.