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dexar [7]
3 years ago
7

Which of the following accurately describes the way in which a muscle moves?

Physics
1 answer:
Vaselesa [24]3 years ago
7 0
<h3><u>Answer</u>;</h3>

B. When actin filaments are pulled toward the center of the sarcomere, the fiber shortens.

<h3><u>Explanation;</u></h3>
  • <em><u>The events of muscle fiber shortening occurs with in the sacromeres in the fibers. </u></em>
  • <em><u>Contraction of striated muscle fibers takes place as the sacromeres shorten as myosin heads pull on the actin filaments.</u></em>
  • <em><u>Filament movement starts at the region or zone where thin and thick filaments overlap. </u></em>
  • <em><u>Myofibril contains many sacromeres along its length and thuse myofibrils and muscle cells contract as the sacromeres contract.</u></em>
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<h3>What is an ideal pulley?</h3>
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