sympathetic nervous system

US /ˌsɪm.pəˈθet.ɪk ˈnɜːr.vəs ˌsɪs.təm/
UK /ˌsɪm.pəˈθet.ɪk ˈnɜːr.vəs ˌsɪs.təm/
"sympathetic nervous system" picture
1.

交感神经系统

the part of the autonomic nervous system that prepares the body for stress by increasing heart rate, blood pressure, and respiration, and by diverting blood flow to the muscles

:
The sympathetic nervous system is responsible for the 'fight or flight' response.
交感神经系统负责“战斗或逃跑”反应。
Activation of the sympathetic nervous system can lead to increased alertness.
交感神经系统的激活可导致警觉性增加。