Autonomic nervous system
Medical term · A
The part of the nervous system that controls involuntary actions, such as blood pressure or breathing. It also plays an important role in the fight or flight response to danger.
Related terms
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Blood pressureThe force blood exerts against the walls of the arteries. Optimal blood pressure is less than 120/80 mm Hg.
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Sympathetic nervous systemAn offshoot of the autonomic nervous system; it sends signals to prepare the body for action when stress hormones are released in response to perceived or real dangers.
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Autologous fat transplantRemoval of fat from one part of the body to use as filler in another part, for example, to fill wrinkles and lines in the face and lips.