muscle
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Excitability | capacity of skeletal muscle to respond to a stimulus
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| Extensibility | ability to be stretched
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| Elasticity | ability recoil to original shape after being stretched
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| Epimysium |
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| fascia | connective tissue located outside the epimysium
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| contractability | ability of skeletal muscle to shorten with force
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| fibers | fasciculi are composed of single muscle cells
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| perimysium | loose connective tisse surrounding the facicle
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| Endomysium | each fiber is surrounded by connective tissue sheath
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| Myofibrils | a thread like structure the extends to each end of fiber
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| actin Myofiliment | thin myofiliment
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| Actin Myofiliment | resembles two mintue strands of pearls twisted together
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| Myosin Myofiliments | thick myofiliments
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| Myosin Myofiliment | resemble bundles of minute golf clubs
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| Motor Neurons | nerve cells that carry action potentials to skeletal muscles
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| Synapse | each axon branch that connects to muscle
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| Motor Unit | a single motor neuron and all the skeletal muscle fiber it innervates
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| Presynaptic Terminal | enlarged nerve terminal
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| Synaptic Cleft | space between the presynaptic terminal and the muscle cell
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| Postsynaptic terminal | the muscle fiber
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| Sliding filament mechanism | Sliding of actin myofiliments past myosin myofiliments during contraction
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| Muscle twitch | contraction of entire muscle
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| threshold | a level of stimulusa muscle fiber must reach before it will respond
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| all-or-none response | when it reaches threshold, contract maximumly
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| 25-Lag phase | time between application of a stimulus to a motor neuron
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| contraction phase | the time of contration
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| relaxation phase |
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Created by:
Puddintader
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