Your sympathetic nervous system is the network of nerves behind the “fight-or-flight” response. It helps your brain manage body systems in times of stress or danger.

The sympathetic nervous system (SNS or SANS, sympathetic autonomic nervous system, to differentiate it from the somatic nervous system) is one of the three divisions of the autonomic nervous system, the others being the parasympathetic nervous system and the …

2023年5月8日 · The sympathetic autonomic nervous system (SANS) is one of the two divisions of the autonomic nervous system (ANS), along with the parasympathetic nervous system (PANS), These systems primarily work unconsciously in opposite ways to regulate many functions and parts of the body.

2023年11月10日 · The sympathetic nervous system is a branch of the autonomic nervous system that prepares the body for "fight or flight" responses during stressful situations. It increases heart rate, dilates pupils, and inhibits digestion, among other functions, to mobilize the body's resources for immediate action.

2023年11月2日 · The sympathetic nervous system is part of the autonomic nervous system, along with its counterpart, parasympathetic nervous system. The origin of the sympathetic nervous system is found within the thoracic and lumbar segments of the spinal cord also known as the thoracolumbar division (T1 to L2,3).

2024年10月15日 · The sympathetic nervous system (SNS) is one of the two main divisions of the autonomic nervous system (ANS). It acts in conjunction with the parasympathetic nervous system (PNS) to maintain homeostasis within the body.

2025年1月7日 · sympathetic nervous system, division of the nervous system that functions to produce localized adjustments (such as sweating as a response to an increase in temperature) and reflex adjustments of the cardiovascular system.

2023年3月1日 · The sympathetic nervous system is the part of the autonomic nervous system that is activated when there is danger. It is known to be linked to the fight, flight, freeze, and fawn stress responses.

2025年1月28日 · When one faces a dangerous or stressful situation, the sympathetic nervous system is automatically activated without conscious control. Various body functions are activated almost simultaneously such as:

2023年9月29日 · Brainstem structures, such as the rostral ventrolateral medullary vasomotor centre, raphe nucleus and the nucleus tractus solitarius, are simple control relays which provide the coupling between the afferent and efferent limbs of cardiovascular and respiratory reflexes.