Ch. 6 muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| muscle to shorten with force | contractility
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| capacity of muscle to respond to a stimulus | excitability
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| ability to be stretched | extensibility
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| ability to recoil to original length after stretched | elasticity
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| each muscle surrounded by connective tissue | epimysium
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| surrounds and separates muscles | fascia
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| surrounded by loose connective tissue | perimysium
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| the fasciculi are composed of single muscle cells | fibers
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| each fiber surrounded by a connective tissue sheath | endomysuim
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| threadlike structure that extends from 1 end to other | myofibrils
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| thin myofilaments | actin myofilaments
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| thick myofilaments | myosin myofilaments
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| actin and myosin myofilaments form highly ordered units | sarcomeres
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| the charge difference across the membrane | resting membrane potential
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| the brief reversal back of the charge | action potential
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| nerve cells that carry action potentials to skeletal muscle fibers | motor neurons
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| each branch that connects to the muscle forms a | neuromusclular junction
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| a single motor neuron and skeletal muscle fibers innervates with | motor unit
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