involuntary contraction definition
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Spasm For the British literary movement, see Spasmodic poets. A spasm is a sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ such as the heart. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia. Most commonly, it is a muscle cramp which is accompanied by a sudden burst of pain.
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- Definition of involuntary for Students. 1  1 : not done consciously an involuntary whimper. 2  2 : not done by choice involuntary labor.
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contraction Full Definition of CONTRACTION. 1. a: the action or process of contracting: the state of being contracted b: the shortening and thickening of a functioning muscle or muscle fiber c: a reduction in business activity or growth. the act or process of making something smaller or of becoming smaller. medical: a movement of a muscle that causes it to become tight and that is sometimes painful; especially: a movement of muscles in the womb when a woman is giving birth to a child.
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- Contractions in striated muscles are voluntary, except for the heart muscle, in which contractions are involuntary. Cardiac muscle is often treated separately from the other striated muscles, as it has somewhat different characteristics.
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contraction contraction. n. 1. an instance of contracting or the state of being contracted. 2. (Physiology) physiol any normal shortening or tensing of an organ or part, esp of a muscle, e.g. during childbirth. 3. (Pathology) pathol any abnormal tightening or shrinking of an organ or part.
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- Definitions: 1. A syndrome of abnormal muscle contraction that produces repetitive involuntary twisting movements and abnormal posturing of the neck, trunk, face, and extremities. The definition information for dystonia is provided by Stedman's.You can search our medical dictionary here.efinitions: 1. A syndrome of abnormal muscle contraction that produces repetitive involuntary twisting movements and abnormal posturing of the neck, trunk, face, and extremities. The definition information for dystonia is provided by Stedman's.
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involuntary not voluntary; independent of one's will; not by one's own choice: an involuntary listener; involuntary servitude. 2. unintentional; unconscious: an involuntary gesture. 3. Physiology. acting independently of or done or occurring without volition: involuntary muscles.
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Translations for Involuntary servitude Involuntary Servitude definition - Involuntary servitude or involuntary slavery is a United States legal and constitutional term for a person laboring against that person's will to benefit another, under some form of coercion other than the worker's financial needs. While laboring to benefit another occurs also in the condition of slavery,
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involuntary muscle involuntary muscle. Smooth muscle, usually within an organ or blood vessel, that contracts under the influence of unconscious processes mediated by the AUTONOMIC nervous system rather than by the conscious will. involuntary muscle.
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Dystonia Dystonia is a movement disorder that causes involuntary contractions of your muscles. These contractions result in twisting and repetitive movements. Sometimes they are painful. Dystonia can affect just one muscle, a group of muscles or all of your muscles.
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SMOOTH MUSCLE Dictionary. Definition of involuntary muscle. 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)Similar Words: smooth muscle Hyponyms: myometrium, musculus sphincter ani internus.efinition of involuntary muscle. 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)Similar Words: smooth muscle Hyponyms: myometrium, musculus sphincter ani internus.
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spasm Also found in: Dictionary, Thesaurus, Medical, Wikipedia. involuntary rigid muscle contraction, often persistent and often accompanied by pain. It usually has some underlying physical cause such as disease, strain, or injury to the muscle or nearby tissues, impairment of circulation, or a disturbance of body chemistry. The spasm may be confined to one group of muscles or it may be severe and fairly generalized, as in convulsionsconvulsion, sudden, violent, involuntary contraction of the muscles of the body, often accompanied by loss of consciousness.
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- A spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.It most commonly refers to a muscle cramp which is often accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes.There are a variety of other causes of involuntary muscle contractions, which may be more serious, depending on the cause.The word spasm may also refer to a temporary burst of energy, activity, emotion, eustress, stress, or anxiety unrelated to, or as a consequence of, involuntary muscle activity.here are a variety of other causes of involuntary muscle contractions, which may be more serious, depending on the cause. The word spasm may also refer to a temporary burst of energy, activity, emotion, eustress, stress, or anxiety unrelated to, or as a consequence of, involuntary muscle activity.
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spasm spasm. 1. a sudden involuntary contraction of a muscle or group of muscles. 2. a sudden but transitory constriction of a passage, canal or orifice. Spasms usually occur when the nerves supplying muscles are irritated, and are commonly accompanied by pain.
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Muscle Contraction Types â Part 1 Weight training therefore, involves concentric muscle movements, voluntary eccentric muscle movements, and occasionally, involuntary eccentric movements. Isometric contractions: An isometric contraction is a type of muscle contraction where the length of the muscle doesn’t change while undergoing tension.his is another example of a voluntary eccentric contraction. b) Involuntary eccentric contractions: Involuntary eccentric contractions occur when the weight or resistance you are attempting to move or lift is too heavy or strong for the muscle to accommodate.
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cramp cramp 1. 1. Often, cramps. a. an involuntary, usu. painful contraction or spasm of a muscle or muscles. b. a painful contraction of involuntary muscle in the wall of the abdomen, uterus, or other organ. 2. writer's cramp. 3. to affect with or as if with a cramp.
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What Causes Involuntary Movements? An involuntary movement occurs when you move your body in an uncontrollable and unintended way. These movements can be anything from quick, jerking tics to longer tremors and seizures. You can experience these movements in almost any part of the body, including the neck, face, and limbs. There are a number of types of uncontrollable movements and causes.
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What Type of Macromolecule Is an Enzyme? What type of macromolecule is collagen? Enzymes need a minimal amount of energy called activation energy to start working. These special proteins have a specific place for reactants, also called substrates, to bind called an active site. The active site is specific to the enzyme, similar to how a key fits into a lock. With rare exceptions, only a specific enzyme can catalyze a certain reaction.
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Lung Cancer The right lung has three lobes, while the left lung is divided into two lobes and a small structure called the lingula that is the equivalent of the middle lobe on the right. The major airways entering the lungs are the bronchi, which arise from the trachea, which is outside the lungs.
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What Causes Involuntary Movements? An involuntary movement occurs when you move your body in an uncontrollable and unintended way. These movements can be anything from quick, jerking tics to longer tremors and seizures. You can experience these movements in almost any part of the body,... An involuntary movement occurs when you move your body in an uncontrollable and unintended way. These movements can be anything from quick, jerking tics to longer tremors and seizures. You can experience these movements in almost any part of the body, including the neck, face, and limbs.
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- Split and merge into it. Answer by OH29432. Confidence votes 59. Voluntary means you will do something cooperatively, where involuntary means you are forced to do something against your will. adjective adjective: involuntary. 1  1. done without will or conscious control. 2 she gave an involuntary shudder.plit and merge into it. Answer by OH29432. Confidence votes 59. Voluntary means you will do something cooperatively, where involuntary means you are forced to do something against your will. adjective adjective: involuntary. 1  1. done without will or conscious control.
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contraction medical: a movement of a muscle that causes it to become tight and that is sometimes painful; especially: a movement of muscles in the womb when a woman is giving birth to a child. : a short form of a word or word group that is made by leaving out a sound or letter.
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- A muscle spasm is a painful, involuntary movement or contraction of a muscle. A muscle spasm is also known as a muscle cramp. Muscle spasms and cramps are not the same as muscle twitching, which refers to very fine involuntary movements (fasciculations) of a small segment of muscle.uscle spasms and cramps can also be caused by neuromuscular disorders, such as multiple sclerosis or a spinal cord injury. Movement disorders called dystonias also lead to forceful contractions. Dystonias can also be a complication of stroke. Certain medications can cause involuntary muscle contractions as well.
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- Full Definition of INVOLUNTARY. 1. : done contrary to or without choice. 2. : compulsory. 3. : not subject to control of the will: reflex. — in·vol·un·tari·ly \-ˌvae-ˌvä-lən-ˈter-ə, -lē-ˈte-\ rə. — adverb·in·vol·un·tari \-ness-ˈvae-ˈvä-lən-ˌter, -ē-nəs-\ ˌte. Rē noun see involuntary Defined-for english. language learnersull Definition of INVOLUNTARY. 1. : done contrary to or without choice. 2. : compulsory. 3. : not subject to control of the will: reflex. — in·vol·un·tari·ly \-ˌvae-ˌvä-lən-ˈter-ə, -lē-ˈte-\ rə. — adverb·in·vol·un·tari \-ness-ˈvae-ˈvä-lən-ˌter, -ē-nəs-\ ˌte. Rē noun see involuntary Defined-for english. language learners
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Actus Reus MPC definition of involuntary acts. reflex or convulsion; bodiy movement during unconsciousness or sleep; conduct during hypnosis or hypnotic suggestion; bodily movement that otherwise is not a product of the effort or determination of the actor, either conscious or habitual.
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contraction contraction, isotonic (īˈ·s ·t nˑ·ik k n·trakˑ·sh n) , n a muscle contraction in which the muscle length (shortening or lengthening) changes against a counterforce less than that of the contraction thus resulting in movement. an increase in muscular tension without a change in muscle length, as in clenching the teeth. contraction, isotonic muscle. n an increase in muscular tension during movement without resistance (either lengthening or shortening), as in free opening and closing of the jaws.