Meaning of the word "sympathetic nervous system" in English

What does "sympathetic nervous system" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

sympathetic nervous system

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

Noun

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

Example:
The sympathetic nervous system is responsible for the 'fight or flight' response.
Activation of the sympathetic nervous system can lead to increased alertness.