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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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dsvcbhdjnskl dsvcbhdjnskl
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6 years ago
A muscle fiber shortens when ___ filaments pull on stationary ___ filaments, producing a shortened fiber and a contracted muscle.
 
  a. Myosin; actin
  b. Actin; acetylcholine
  c. Acetylcholine; myosin
  d. Actin; myosin
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estiee3estiee3
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6 years ago
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dsvcbhdjnskl Author
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6 years ago
You make an excellent tutor!
rudy.zondo
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Brilliant ツ
klyn
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This site is awesome
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