parasympathetic nervous system

American  

noun

1. Anatomy. the part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions, functioning in opposition to the sympathetic nervous system, and producing effects such as slowing the heart rate and contraction of the pupils.

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parasympathetic nervous system Scientific  

/ păr′ə-sĭm′pə-thĕt′ĭk /

1. The part of the autonomic nervous system that tends to act in opposition to the sympathetic nervous system, as by slowing down the heartbeat and dilating the blood vessels. It regulates the function of many glands, such as those that produce tears and saliva, and stimulates motility and secretions of the digestive system.

2. Compare sympathetic nervous system

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Example Sentences

But for many, the sympathetic nervous system is out of balance with the parasympathetic nervous system, which, along with the vagus nerve, works to calm the body.

From Salon • Apr. 3, 2024

It’s a “cuddle puddle,” as Darragh calls the evening activity, adding that silliness and laughter activates the parasympathetic nervous system and relieves stress.

From Los Angeles Times • Oct. 16, 2023

"The average heartbeat slows down, and the activity of the parasympathetic nervous system, which plays an important role in controlling the internal organs, increases."

From Science Daily • Oct. 10, 2023

The vagus nerve is the key player in the parasympathetic nervous system, which is the “rest and digest” system that calms the body during times of low stress.

From Scientific American • Jul. 4, 2023

While the sympathetic nervous system is activated in stressful situations, the parasympathetic nervous system allows an animal to “rest and digest.”

From Textbooks • Apr. 25, 2013