INVOLUNTARY MUSCLE • DICCIONARIO INGLES.COM • Definition of Involuntary muscle

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/ɪnvˈɑləntˌɛri mˈəsəl/ Listen

Involuntary muscle

noun

A muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart). Synonym: smooth muscle.

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Etymology of 'Involuntary muscle'

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"Involuntary muscle" Quotes from Famous Books

... which is responded to as unthinkingly as is the desire for air in the taking of a breath. But the tiny child soon has to learn to control some of his natural functions. At the lower end of the rectum there is a purse-string muscle called the Sphincter-ani, an involuntary muscle which may with training be brought partly under voluntary control. Under the demands of civilization, the baby learns to tighten up this muscle until the proper time for evacuation. Then, if he be normal, ...

— Outwitting Our Nerves - A Primer of Psychotherapy • Josephine A. Jackson and Helen M. Salisbury

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Words linked to "Involuntary muscle" : musculus sphincter ani internus, musculus, muscle, myometrium