ashlynnanne1400 ashlynnanne1400
  • 14-02-2019
  • Biology
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Each skeletal muscle is a discrete organ made up of hundreds or thousands of muscle fibers. although muscle fibers predominate, substantial amounts of connective tissue, blood vessels, and nerve fibers are also present. what happens during muscle contraction?

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alyssadias
alyssadias alyssadias
  • 18-02-2019
The sliding filament theory is how muscles contract at a molecular level :)
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