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Topic 6: Skeletal muscle contraction Describe in detail the entire process of excitation coupling in skeletal muscle,...

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Medical Sciences

Topic 6: Skeletal muscle contraction

Describe in detail the entire process of excitationcoupling in skeletal muscle, begin with an action potentialreaching the synaptic knob of a motor neuron through completion ofa cross Bridge cycle. after detailing those events to include thefollowing information

  • Define a motor unit describe motor unit recruitment andExplain how these terms relate to excitation-contractioncoupling.

  • Define and describe muscle twitch and summation andexplain how these terms relate to motor unit/motor unit Recruitmentand excitation-contraction coupling.

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4.5 Ratings (589 Votes)
ExcitationContraction Coupling The contraction of of skeletal muscles starts with the propagation of action potential through the synaptic knob of the axon of a motor neuron This causes release of acetylcholine due to calcium induced exocytosis which generates an action potential in the sarcolemma Depolarization of sarcolemma spreads inwards along T tubules into the muscle This depolarization causes release of Calcium from terminal    See Answer
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