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involuntary muscle

DEFINITIONS OF: involuntary muscle

1

n 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)

Synonyms:
smooth muscle
Types:
myometrium
the smooth muscle forming the wall of the uterus
musculus sphincter ani internus
an internal ring of smooth muscle formed by circular fibers of the rectum
Type of:
muscle, musculus
one of the contractile organs of the body
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