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Skeletal Muscle Contraction Quiz
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Skeletal Muscle Contraction Quiz

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Questions and Answers

What leads to the release of calcium from the sarcoplasmic reticulum?

  • Hyperpolarization caused by potassium efflux
  • Depolarizing current caused by sodium influx (correct)
  • Action potential firing
  • Opening of chloride channels

    • What type of channels open, allowing sodium to flow in and causing a depolarizing current?

  • Voltage-gated potassium channels
  • Voltage-gated sodium channels (correct)
  • Ligand-gated sodium channels
  • Ligand-gated potassium channels

    • What type of neurons fire action potentials that move down the axon?

  • Sensory neurons
  • Interneurons
  • Somatic motor neurons (correct)
  • Autonomic neurons

    • What is involved in muscle cell membrane potential and the release of calcium from the sarcoplasmic reticulum?

    <p>Acetylcholine</p> Signup and view all the answers

    What is responsible for bringing in calcium during muscle contraction?

    <p>Pink protein</p> Signup and view all the answers

    What type of channels open, allowing sodium to flow in and causing a depolarizing current?

    <p>Voltage-gated sodium channels</p> Signup and view all the answers

    What is the role of acetylcholine in muscle cell membrane potential and the release of calcium from the sarcoplasmic reticulum?

    <p>Involvement in muscle cell membrane potential and calcium release</p> Signup and view all the answers

    What leads to the release of calcium from the sarcoplasmic reticulum?

    <p>Depolarizing current caused by sodium influx</p> Signup and view all the answers

    What type of neurons fire action potentials that move down the axon?

    <p>Somatic motor neurons</p> Signup and view all the answers

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