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Please provide a brief overview of how muscles contract with vocabulary and definitions.

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Solution Summary

This solution examines the process of muscle contraction, providing a step-by-step explantion. It includes vocabulary (including acetylcholine, action potential, actin, cytosol, myosin, sacroplasmic reticulum, tropomyosin, and troponin) used in a biology survey class as well as definitions to aid understanding. The explanation is given in 376 words with one reference.

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Problem: Please provide a brief overview of how muscles contract with vocabulary and definitions.

Solution: The contraction of a skeletal muscle occurs as follows:

1. Skeletal muscles contract only when stimulated by a motor neuron. The neurotransmitter acetylcholine is released from the synapse and diffuses across the synaptic cleft to receptor proteins on the plasma membrane of the muscle.
2. As a result, the muscle fiber becomes depolarized and an action potential is propagated deep into the muscle fibers.
3. The action potential triggers Ca2+ ions to be pumped from the ...

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