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14 Cards in this Set

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