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14 Cards in this Set
- Front
- Back
the strength or force of muscle contraction is affected by (4)
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number of muscle fibers contracting - relative size of muscle - series-elastic elements - degree of muscle stretch
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the force of contraction depends on the number of
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muscle fibers contracting
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the more motor units recruited, the
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stronger the contraction
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the force of contraction depends on the relative
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size of the muscle
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the greater the muscle bulk, the
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greater its strength
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strength increases with regular use of muscle causing
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hypertrophy
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the force of contraction depends on what elements
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series-elastic elements
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in series-elastic elastic elements ____ components are stretched by the force of the ____ elements (myofibrils)
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non-contracting - contractile
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once stretched the ____ elements will transfer tension to the ____
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elastic - load
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in series-elastic ,the more rapidly a muscle is stimulated, the
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more force it exerts
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in series- elastic, single twitches exert ____ force
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less
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the force of contraction depends on the degree of
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muscle stretch
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optimal length of a skeletal muscle is ____ % of resting length
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80-100
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most muscles maintain length by the way they are
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attached to the bone
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