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Muscle System Study Guide (Page 3)
Terms in this set (12)
_____________ muscles maintain posture or balance at the joints.
What is the name given to those muscles contracting at the same time as prime movers? And what is the advantage?
Advantage: more effect movement
Muscle fibers contract to their fullesst extent or not at all:
All or nothing principle
The more fibers contracted, the ____________ the contraction.
What effect does the metabolic condition have on muscle contraction?
If several muscle fibers become fatigued, the force lessons.
What is the length-tension relationship?
The strongest contraction is possible only when the muscle organ has been stretched to an optimal initial length; reason for warm-up
Tone within a muscle remaining the same, but the length shortens:
Muscle length remains the same, bu the muscle tension increases:
Smooth sustained contractions:
Distinguish complete and incomplete tetanus:
Incomplete - very short periods of relaxation
Complete - no periods of relaxation
A gradual step like increase in the strength of contractions observed in a series of twitch contractions occurring about 1 second apart:
What is the purpose of warmup exercises?
Muscle contracts more forcefully after contracting a few times rather than for the first time.
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