parasympathetic nervous system

noun

Definition of parasympathetic nervous system

: the part of the autonomic nervous system that contains chiefly cholinergic fibers, that tends to induce secretion, to increase the tone and contractility of smooth muscle, and to slow heart rate, and that consists of a cranial and a sacral part — compare sympathetic nervous system

Examples of parasympathetic nervous system in a Sentence

Recent Examples on the Web But one step on Canyon Ranch soil will send your parasympathetic nervous system into overdrive. Jennifer Fernandez, Town & Country, "The 10 Luxury Wellness Escapes You’ll Want to Book for 2020," 5 Nov. 2019 Osteocalcin, in turn, tamps down activity in the parasympathetic nervous system–nerve fibers that slow heart rate and breathing. Emily Underwood, Science | AAAS, "Hormone secreted by bones may help us escape danger," 12 Sep. 2019 To do its job, your ANS is divided into two parts: your sympathetic nervous system (SNS) and your parasympathetic nervous system (PNS). Natasha Lavender, SELF, "Is Trypophobia Really a Fear of Holes or Something Else Entirely?," 26 July 2019 The vagus nerve’s job is to regulate your parasympathetic nervous system. Anne R. Crecelius, The Conversation, "Why do people faint?," 20 June 2019 Scientifically speaking, this activates the mammalian diving reflex and kicks on your parasympathetic nervous system, which is responsible for relaxation. Melody Wilding, Quartz at Work, "How to control your emotions when you’re at work," 3 June 2019 Gua sha also addresses the parasympathetic nervous system and can help with anxiety, stress, pain, and depression. Prue Lewington, Harper's BAZAAR, "Women Are Giving Up Botox for Facial Massage," 23 May 2019 This new kind of urban oasis is meant to have its own effect—triggering the parasympathetic nervous system to help the body to relax, digest, and heal, says Berzin. Lauren Valenti, Vogue, "Inside the New York Wellness Space That Could Be the Future of Primary Care," 30 Jan. 2019 On the flip side, nature boosted the body’s parasympathetic nervous system activity by 55 percent, meaning participants were more relaxed. Christine Yu, SELF, "Wading in a Cranberry Bog Was the Therapeutic Experience I Didn’t Know I Needed," 26 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'parasympathetic nervous system.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of parasympathetic nervous system

circa 1934, in the meaning defined above

Keep scrolling for more

Learn More about parasympathetic nervous system

Time Traveler for parasympathetic nervous system

Time Traveler

The first known use of parasympathetic nervous system was circa 1934

See more words from the same year

Statistics for parasympathetic nervous system

Cite this Entry

“Parasympathetic nervous system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/parasympathetic%20nervous%20system. Accessed 22 Feb. 2020.

Keep scrolling for more

More Definitions for parasympathetic nervous system

parasympathetic nervous system

noun

Medical Definition of parasympathetic nervous system

: the part of the autonomic nervous system that contains chiefly cholinergic fibers, that tends to induce secretion, to increase the tone and contractility of smooth muscle, and to slow the heart rate, and that consists of (1) a cranial part made up of preganglionic fibers leaving and passing the midbrain by the oculomotor nerves and the hindbrain by the facial, glossopharyngeal, vagus, and accessory nerves and passing to the ciliary, sphenopalatine, submandibular, and otic ganglia of the head or to ganglionated plexuses of the thorax and abdomen and postganglionic fibers passing from these ganglia to end organs of the head and upper trunk and (2) a sacral part made up of preganglionic fibers emerging and passing in the sacral nerves and passing to ganglionated plexuses of the lower trunk and postganglionic fibers passing from these plexuses chiefly to the viscera of the lower abdomen and the external genital organs

called also parasympathetic system

— compare sympathetic nervous system

More from Merriam-Webster on parasympathetic nervous system

Britannica.com: Encyclopedia article about parasympathetic nervous system

Comments on parasympathetic nervous system

What made you want to look up parasympathetic nervous system? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!