tetanic contraction

強縮性収縮

WordNet

1. (physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber) (同)muscular_contraction, muscle_contraction
2. the act of decreasing (something) in size or volume or quantity or scope
3. a word formed from two or more words by omitting or combining some sounds; "`wont is a contraction of `will not"; "`oclock is a contraction of `of the clock"
4. of or relating to or causing tetany
5. of or relating to or causing tetanus

PrepTutorEJDIC

1. 〈U〉〈C〉(…の)収縮,短縮《+『of』+『名』》 / 〈U〉(通貨・資金・支出などの)縮小,節減《+『of』+『名』》 / 〈U〉(いやなこと・よくないことを)身に負うこと,(悪習などが)身につくこと《+『of』+『名』》 / 〈C〉陣痛

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/29 21:38:41」(JST)

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[Wiki en表示]

A tetanic contraction (also called tetanized state or tetanus) occurs when a motor unit has been maximally stimulated by its motor neuron. This occurs when a muscle's motor unit is stimulated by multiple impulses at a sufficiently high frequency. Each stimulus causes a twitch. If stimuli are delivered slowly enough, the tension in the muscle will relax between successive twitches. If stimuli are delivered at high frequency the twitches will overlap resulting in tetanic contraction. When tetanized, the contracting tension in the muscle remains constant in a steady state. This is the maximal possible contraction.

Causes

Toxins and drugs

Tetanic contractions are characteristic of poisoning by strychnine. They may also occur as part of an extrapyramidal adverse drug reaction of some typical antipsychotic drugs, specifically the opisthotonos effect of acute dystonic reaction in which "tetanic" heightening of entire body, head and belly up occurs.

Electrical stimulation

Tetanic contraction may be observed following the use of a device intended to apply transcutaneous electrical muscle stimulation (EMS) through skin contact electrodes for the purpose of improving abdominal muscle tone.

Diseases

As well as being caused by tetanus (lockjaw), after which they are named, tetanic contractions are a symptom of hypoparathyroidism, due to an underdeveloped parathyroid, or injury to the parathyroid.

See also

• Muscle contraction
• Muscle fatigue
• Tetanus
  • Tetanospasmin

References

UpToDate Contents

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• 1. 心筋における興奮収縮連関 excitation contraction coupling in myocardium
• 2. 神経筋接合部の電気診断学的評価 electrodiagnostic evaluation of the neuromuscular junction
• 3. ストリキニーネ中毒 strychnine poisoning
• 4. 破傷風 tetanus
• 5. 産婦人科における硬膜外・脊椎麻酔の副作用 adverse effects of neuraxial analgesia and anesthesia for obstetrics

English Journal

• Low levels of Survival Motor Neuron protein are sufficient for normal muscle function in the SMNΔ7 mouse model of SMA.

• Iyer CC1, McGovern VL1, Murray JD2, Gombash SE3, Zaworski PG4, Foust KD3, Janssen PM2, Burghes AH5.
• Human molecular genetics.Hum Mol Genet.2015 Nov 1;24(21):6160-73. doi: 10.1093/hmg/ddv332. Epub 2015 Aug 13.
• Spinal Muscular Atrophy (SMA) is an autosomal recessive disorder characterized by loss of lower motor neurons. SMA is caused by deletion or mutation of the Survival Motor Neuron 1 (SMN1) gene and retention of the SMN2 gene. The loss of SMN1 results in reduced levels of the SMN protein. SMN levels ap
• PMID 26276812

• Exposure to a Low Lead Concentration Impairs Contractile Machinery in Rat Cardiac Muscle.

• Silva MA1, de Oliveira TF, Almenara CC, Broseghini-Filho GB, Vassallo DV, Padilha AS, Silveira EA.
• Biological trace element research.Biol Trace Elem Res.2015 Oct;167(2):280-7. doi: 10.1007/s12011-015-0300-0. Epub 2015 Mar 21.
• Lead exposure has been considered to be a risk factor for hypertension and cardiovascular disease. Our purpose was to evaluate the effects of low plasma lead concentration on cardiac contractility in isolated papillary muscles. Wistar rats were divided in control group or group treated with 100 ppm
• PMID 25795172

• In vivo assessment of contractile strength distinguishes differential gene function in skeletal muscle of zebrafish larvae.

• Martin BL1, Gallagher TL2, Rastogi N1, Davis JP3, Beattie CE4, Amacher SL5, Janssen PM6.
• Journal of applied physiology (Bethesda, Md. : 1985).J Appl Physiol (1985).2015 Oct 1;119(7):799-806. doi: 10.1152/japplphysiol.00447.2015. Epub 2015 Aug 6.
• The accessible genetics and extensive skeletal musculature of the zebrafish make it a versatile and increasingly used model for studying muscle contraction. We here describe the development of an in vivo assay for measuring the contractile force of intact zebrafish at the larval stage. In addition,
• PMID 26251513

Japanese Journal

• 生体内在性オピオイドの性質と機能的役割

• YAKUGAKU ZASSHI 136(4), 591-605, 2016
• NAID 130005140772

• Enhanced activity of eccentric contraction induces alterations in in vitro sarcoplasmic reticulum Ca²⁺ handling in rat hindlimb muscles

• The Journal of Physical Fitness and Sports Medicine 4(1), 117-124, 2015
• NAID 130005130596

• Relaxing Effect of Acupuncture Stimulation on Hypertonic Muscle in a Rat Model

• 日本温泉気候物理医学会雑誌 78(3), 187-194, 2015
• NAID 130005072051

Related Links

• tetanic contraction - definition of tetanic contraction by ...

Definition of tetanic contraction in the Medical Dictionary. tetanic contraction explanation. Information about tetanic contraction in Free online English dictionary. What is tetanic contraction? Meaning of tetanic contraction medical ...

• Tetanic contraction | インターネット内の検索結果 | cyclopaedia.net

強縮（きょうしゅく、英:tetanus, Tetanic contraction, tetany）とは反復刺激により単収縮 が連続して発生する現象。刺激と刺激の間に弛緩が生じないものを完全強縮、不完全 ではあるが弛緩が生じるものを不完全強縮と呼ぶ。

Related Pictures

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★リンクテーブル★

リンク元	「テタニー」「強縮性収縮」
関連記事	「contraction」「tetanic」「tetani」

「テタニー」

　　[★]

英

tetany (M)

同

強縮性収縮 tetanic contraction

関

[[]]

概念

• 上皮小体を除くとカルシウム濃度の低下により、激しい痙攣に襲われる
• 全身の筋痙攣は血液中のカルシウム濃度低下により起こる

原因

• 低カルシウム血症：カルシウムイオンは細胞の興奮性を低下する安定化作用がある(PT.440)
• アルカローシス：アルカローシスからテタニーに至りやすい。pH↑　→　アルブミンnegative charge↑　→　アルブミン-Ca2+ ↑　→　free Ca2+ ↓　≒ 低カルシウム血症 (SP.774)
• 低マグネシウム血症

<youtube v=uukz0WWZUQQ></youtube>

「強縮性収縮」

　　[★]

英

tetanic contraction

関

テタニー

「contraction」

　　[★]

• n.

• 短縮、収縮。(筋肉の)収縮、攣縮。(医)(腎・肝・膀胱などの)萎縮
• 縮小。制限。(通貨・資金などの)制限、回収、縮小。不況
• (数)縮小、縮約。省略算。(文法)縮約、短縮
• 負債を作ること、病気にかかること、癖のつくこと
• 交わり/約束を結ぶこと(of)

　 　 　 　

「tetanic」

　　[★]

• adj.

• 強縮性の、強直性の、強縮の、破傷風の、テタヌスの

関

ankylosing、ankylotic、lockjaw、tetani、tetanus、tetany、tonic

　 　

「tetani」

　　[★]

• np

• 強縮

関

tetanic、tetanus、tetany