parasümpaatiliseks

Parasümpaatiline refers to the parasympathetic nervous system, one of the two major divisions of the autonomic nervous system. The autonomic nervous system controls involuntary bodily functions such as heart rate, digestion, and respiration. The parasympathetic nervous system is often described as the "rest and digest" system. Its primary role is to conserve energy and promote restorative processes within the body.

When the parasympathetic nervous system is activated, it slows the heart rate, decreases blood pressure, and stimulates digestive processes like salivation and intestinal motility. It also plays a role in pupil constriction and the relaxation of skeletal muscles. This system works in opposition to the sympathetic nervous system, which is responsible for the "fight or flight" response.

The neurotransmitter most commonly associated with the parasympathetic nervous system is acetylcholine. Nerves that are part of the parasympathetic system originate in the brainstem and the sacral region of the spinal cord. The balance between the sympathetic and parasympathetic nervous systems is crucial for maintaining homeostasis, the stable internal environment of the body. Disruptions in this balance can have significant health implications.