INVOLUNTARY MUSCLE

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does involuntary muscle mean? 

• INVOLUNTARY MUSCLE (noun)
  The noun INVOLUNTARY MUSCLE has 1 sense:

1. 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)

  Familiarity information: INVOLUNTARY MUSCLE used as a noun is very rare.

 Dictionary entry details 

• INVOLUNTARY MUSCLE (noun)

Sense 1

Meaning:

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)

Classified under:

Nouns denoting body parts

Synonyms:

involuntary muscle; smooth muscle

Hypernyms ("involuntary muscle" is a kind of...):

muscle; musculus (one of the contractile organs of the body)

Hyponyms (each of the following is a kind of "involuntary muscle"):

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)

 Context examples 

Oxybutynin blocks muscarinic receptors in smooth muscle, hence inhibiting acetylcholine binding and subsequent reduction of involuntary muscle contractions.

(Oxybutynin, NCI Thesaurus)

A subtype of cerebral palsy characterized by both the tight muscle tone of spastic cerebral palsy and the writhing, involuntary muscle movements of athetoid cerebral palsy.

(Mixed Cerebral Palsy, NCI Thesaurus)

A drug used to treat seizures (involuntary muscle movements) caused by epilepsy (a group of brain disorders).

(Keppra, NCI Dictionary)

The muscle tissue of the HEART composed of striated, involuntary muscle known as cardiac muscle.

(Heart Muscle, NLM, Medical Subject Headings)

A disorder characterized by abnormal, repetitive, involuntary muscle movements, frenzied speech and extreme restlessness.

(Extrapyramidal Disorder, NCI Thesaurus/CTCAE)

This results in the relaxation of bladder smooth muscle and greater bladder capacity, in addition to a reduction in involuntary muscle contractions and involuntary loss of urine.

(Fesoterodine, NCI Thesaurus)

This results in a relaxation of bladder smooth muscle, a reduction of involuntary muscle contractions and delays the initial desire to void.

(Esoxybutynin Chloride, NCI Thesaurus)