muscle contraction

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muscle contraction

The movement of muscle fibres in response to force or load. 

Muscle contraction types 
• Concentric—The muscle shortens in length as it overcomes resistance.
• Eccentric—The muscle increases in length to accommodate resistance.  
• Isometric—The muscle resists outside stress without exhibiting motion.

contraction

a drawing together; a shortening or shrinkage.

isovolumetric contraction
ventricular muscle contraction during early systole after closure of the atrioventricular valves and before the semilunar valves open; the muscle continues to contract, forcing up the ventricular pressure without any change in the ventricular volume.
muscle contraction
see muscle.
myocardial contraction
individual myocardial cells transmit motor impulses across cell boundaries and act as a syncytium.
contraction phase
the stage in wound healing when there is centripetal movement of surrounding tissues and the area of the wound decreases. This is believed to be a cell-mediated phenomenon, involving myofibroblasts.
postural contraction
the state of muscular tension and contraction that just suffices to maintain the posture of the body.
striated muscle contraction
see muscle.
tetanic contraction, tonic contraction
sustained muscular contraction with alternating relaxation.
References in periodicals archive ?
Bloodflow a heated contraction of muscles above your head your voice
During an asthma attack these bronchioles become narrowed, partly by inflammation and mucus but also by contraction of muscles, in the wall of these tiny tubes.
The responses of muscle spindles to changes in length also play an important role in regulating the contraction of muscles, by activating motoneurons via the stretch reflex to resist muscle stretch (Dumitru, 1988).
For example at the growing age of 7-14, we don't allow heavy contraction of muscles but focus on stretching asanas so that growth is not retarded".
But the new study suggests limbs can withstand much more pressure, so the contraction of muscles holds the key.