Respuesta :
The sympathetic nervous system is responsible for fight or flight.
When any one encounter a stressful situation such as encounter of barking dog in this question. The stressful situation produces the “fight-or-flight” response. The hypothalamus stimulates the sympathetic nervous system and the adrenal gland. The sympathetic nervous system uses nerve pathways to initiate reactions in the body. Whereas, adrenal gland secretes hormone Adrenalin into the bloodstream. The combined effects of these two systems are the fight-or-flight response.
