The autonomic nervous system is apart of the nervous system that receives instructions from the brain. It has two parts which are the sympathetic and parasympathetic. The sympathetic nervous system controls the bodes response to a perceived threat and is responsible for the fight, flight or freeze response. Where as the parasympathetic nervous system function is to control the homeostasis and the bodies rest and digest response. The sympathetic nervous system has a thoraco-lumbar outflow from the spinal chord to relay in ganglia adjacent to the spinal chord, from these fibres pass through to organs like the heart, intestine adrenal glands and blood vessels. The sympathetic nervous system also releases adrenaline and noradrenaline which produces
