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Ch. 6 muscles

QuestionAnswer
muscle to shorten with force contractility
capacity of muscle to respond to a stimulus excitability
ability to be stretched extensibility
ability to recoil to original length after stretched elasticity
each muscle surrounded by connective tissue epimysium
surrounds and separates muscles fascia
surrounded by loose connective tissue perimysium
the fasciculi are composed of single muscle cells fibers
each fiber surrounded by a connective tissue sheath endomysuim
threadlike structure that extends from 1 end to other myofibrils
thin myofilaments actin myofilaments
thick myofilaments myosin myofilaments
actin and myosin myofilaments form highly ordered units sarcomeres
the charge difference across the membrane resting membrane potential
the brief reversal back of the charge action potential
nerve cells that carry action potentials to skeletal muscle fibers motor neurons
each branch that connects to the muscle forms a neuromusclular junction
a single motor neuron and skeletal muscle fibers innervates with motor unit
Created by: courtneycriswell
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