muscle physiology lab presentation student fall 07

muscle physiology lab presentation student fall 07 -...

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    Structure and Function of Skeletal Muscle
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Three Muscle Types Skeletal- striated Cardiac- striated, intercalated discs Smooth- not striated All muscle tissue exhibit: Responsiveness - The ability to receive and respond to a stimulus Conductivity – the ability of the impulse to travel along the plasma membrane of the muscle cell. Contractility - The ability to shorten Elasticity - The ability to recoil and resume original length
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Skeletal Muscle Human body contains over 400 skeletal muscles 40-50% of total body weight Functions of skeletal muscle Force production for locomotion and breathing Force production for postural support Heat production during cold stress
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The Neuromuscular Junction Site where motor neuron meets the muscle fiber Separated by gap called the neuromuscular cleft Motor end plate Pocket formed around motor neuron by sarcolemma Neurotransmitter is released from the motor neuron
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