Answer:
The fight or flight response prepares an organism to respond to stress.
Explanation:
Whenever we are at risk, fear or stress, our nervous system activates a mechanism called fight and flight reaction. In the presence of threatening stimuli, whether real or even imaginary, there is activation of the autonomic nervous system, more precisely the sympathetic nervous system, responsible for the release of important substances so that the body can choose between the fight or the escape of the threatening stimulus. This seemingly bad and feared stress response is responsible for maintaining life and is extremely essential to our bodies.
Some reactions of our body observed at this time are:
- increased adrenaline secretion from the adrenal gland;
- increased brain activity and basal metabolism;
-
increased blood glucose concentration, thereby increasing the energy available to all cells in the body;
- increased myocardial muscle activity (cardiac activity), coronary vasodilation, and vasoconstriction of peripheral blood vessels, thereby increasing circulation and blood pressure, thereby reducing the chances of bleeding in the more peripheral regions, which may be affected by the threatening stimulus. ;
- increased energy input to the skeletal muscles needed to run or face danger, etc.
